I have several was mitts.
1. Griots Wash Pad (micro-chenille): this thing is huge and holds a lot of water. Its not a mitt, but a big red dread lock pad. Its fairly soft and holds up well. Its well built and cheap, maybe $16. Its good for large vehicles.
2. BMW Sheepskin Wash Mitt: I've had this mitt for years and its really the only mitt I'd ever need. Very high quality. Sheep hide, not glued on hair so it doesn't shed. Great deal for $25. Not as soft or as long as Wookies Fist, but doesn't scratch or require combing.
Really its the perfect sheepskin mitt. Its 2 sided, unlike the CarPro - a required feature for me. Inside is leather. Doesn't scratch black cars and releases dirt well.
This mitt MAY be made by 4 Star for BMW.
Wookies Fist: I just got this. Expensive. LONG hair that tangles easy. Holds a ton of soap. When wet looks like a dead bloated animal. Grass and fibers want to tangle in it. Requires a lot of careful handling and TLC. Endless rinsing to get the soap out when finished. Takes up to a week to completely dry. Very soft hair and is 2 sided with no thumb. After first use shedding is minimal. I probably would reserve this mitt for a garage queen.
WF drying in the closet. I blow it about with a Metro Blaster to get rid of most of the water. If your like me and always have to have your supplies clean as new and stored in the original packages, be prepared to spend some time with this blowing it out out combing it. Probably kind of overkill, but it does work well. Likely not for production style detailing. Can't be washed or dried in a machine.
AG Black Onyx Mitt/ I have this but can't recall using it. Its so soft I just kind of want to save it. Softest mitt like this I've ever felt
AG Small SheepSkin Wash Pads: I don't think AG sells these anymore. The problem is the "hair" is glues on with some type of binder and they can shed pretty bad. Hair is short, but extremely soft. These are what I use around wheel wells. I have two: one is falling apart and one is not.
Size is good for a small car or small area, nice and small. They are easy to dry, as they are pretty thin, so you can roll them up in a towel. They are easy to ring out, so they are fast to use. Too bad the fall apart and AG doesn't carry them.
JunkMan Mitt: I've had this for years and haven't gone anywhere near one of my cars with it in years. Same style as the AG Black Onyx Mitt, but feels like a cheap knock off. Inside is not lined and dreads don't feel soft.
I've never had an issue with mitts scratching my paint, so I have no reason to go back and use this. I might use it to clean something really dirty like a wheel well. I like and respect Junkman a lot for all his contributions, but don't agree with everything he says. This thing feels cheap and is cheap.
Montana Boars Hair 10" Carwash Brush: not really a mitt, but serves the same purpose. Very high quality and feels like it cod last a lifetime. Holds the perfect amount of soapy water and rinses 100% clean. Has a rubber border in case you bump it against the paint.
Has a reputation for scratching, but hasn't panned out for me. Soaking prior to use is critical. This may be the best "mitt" out there IMO. Only maintenance required is hosing it out when done. I use this exclusively on my Pathfinder daily driver on all surfaces (minus wheels) during a 2BM wash. My paint is in great shape and remains swirl and scratch free a year and a half after I corrected it (and bought the vehicle).. Cleans emblems, grills, cowls, etc.. Better than any mitt. Works great on glass and convertible tops as well. Easier and more enjoyable to use compared to a mitt. Works well on a pole and saves time when doing roofs and windshields. This is my favorite wash tool.
Grout Sponge: I bought a bunch of these a while ago to use for rinseless washes, but never did. Instead I ended up cutting them up and using them for dressing / protectant applicators. When I'm done with the piece I used, I just throw it out. Some people like using these, but it just doesn't seem like a good idea, seems like it would drag dirt across the paint or just mar.
Lake Country Grout Sponge: I bought this a long time ago. Before I new better, I put it in the washer like a dummy and it blew up. It has line channels cut into it to help trap some dirt. I like using it when I did, but don't think I would ever go back to it. Its super cheap. If your interested in sponges, this probably is the way to go.
MF Towels: good for Gary Dean style washes. I find best used with rinseless wash liquid. Good when you only use a side once, then fold over and pick up a new towel, as your wash media stays clean. Good point is when your done you can just throw them in the wash. Bad point is you need many of them. Probably best way to do a rinseless wash IMO.
I've used most of these products recently, and none of them scratched for me on their own. I think its more a function of technique and super soft paint if your having issues.