Best one step polish wax and sealent

HD Speed
Mckee's 360
Meguiars D151
Menzerna PP ultra/ 3 in 1

Take your pick , all of the above are very good.
 
Meguiar's M66 Quick Detailer. That stuff is a life saver.
 
Which leaves the most durable/longest protection? I hear HD speed only leaves a few weeks, in which case, you'd need to apply a LSP. If you're going to have to apply a LSP, why even use an AIO in the first place?
 
You'd be disappointed to have to reapply an LSP after "a few weeks" wow yer not gonna get coating protection from a one step product. You need to adjust expectations OR an AIO is not for you and I wouldn't use them but don't bash them either, they have their place.
 
I can't say if it is the best, but Optimums Poli-Seal is nice to work with and has decent protection.
 
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