Reason I thought of two was I want to get my brother into this. I would learn on maybe the PC jump the the 3401 and have him on the PC. Thoughts?
You are correct that a new car ( if the dealer did not jack the paint up already ) a PC7424XP is going to do fine.
I had no issues with the PC I liberated from the shop for auto use on my trucks. I bought them new and took care of the paint. It was a big change from the Cyclo with a single speed and limited pad selection ( at the time, it was green, Yellow and White ) to be able to select a pad for what needed to be done in the size needed.
It was only when I got to other vehicles ( friends and family ) that did not do so well, that the PC was starting to show its limits. I looked at ( after my 2nd PC the XP version and a G110 - non V2 ) a rotary with the Dynabrade adapter and the Flex. The Flex was still ~ 75.00 more than a good rotary with the Dynabrade adapter, and I still went with the Flex.
I have not tried it ( yet ) but the Megs MF system has been quoted to work better on a PC, G110, GG 6 than a Flex. Don't know why, I have not tried it myself.
If this is what you are going to use for all correction work, then a PC ( or GG or G110V2 ) is going to work fine.
If you are doing more than 1 paint type on multiple vehicles ( of unknown care ), my limited opinion, this is like having a hammer, every problem is treated as a nail.
I have no clue if the MF kit is right for a PacRim mfgr vehicle. I have read soft paint, this is not my opinion just my readings - have not done one myself to know. If this is true, is the MF correct overboard ?? Depends on a lot of external factors.
I have seen Acura that have been done with SIP ( made my eyes bug out hearing this ), others where they took a less aggressive route using white, green & Black pads.
I have been through the PC from the shop that had seen its share of scribing cabinets prior to be putting into polishing service, I tried the G110 ( not the V2 ) when was a disappointment when compared to the antique PC, a new PC7424XP and now a Flex for the primary machine.
I still use the PC for LSP and Glaze, but I always seem to need to start with the flex on most external vehicles for polish work.
My limited time on the Flex, there was not much from it to the PC in terms of "learning" both would used the same concepts, the Flex I don't need to work as hard to get minor corrections done, and heavier corrections the PC was a non starter for it. It would work, but the time interval would be days not hours to get it done, and what kind of post correction work would need to be done.
Keep in mind, you can turn a 4x4 into a 2x4 with 120 grit sandpaper, but a saw is much quicker to get to the same point.
If you are going to be doing this for any amount of time, start with the Flex. Why invest 125.00 into the PC, use that $$ on the Flex.
If cash flow is an issue today, that is a different selection criteria.