I like #34, but these days I only use it to remove polish residues and/or to QD a work in progress after a night in the garage.
My experiences with it were different from Bill D's :nixweiss
I found that when I used it after washes to "refresh" my finish (wax, sealant, whatever), it *did* make it slicker and cleaner, but at a price. The LSP definitely did not last as long when treated to #34. I attributed that to the aforementioned alcohol content. I believe the alcohol in #34 causes a solvent-action that softens the LSP. This makes it smooth out (and possibly release contaminants), so after you've used the #34 it looks and feels better, *but* it also strips (or otherwise degrades) the LSP. Maybe not much, but enough that I quit doing it.
Since I've quit using #34 on it, my SG lasts a good year; it's currently still beading (only now starting to sheet where I've repeatedly spot-clayed it) after 54 weeks, that's with no QDing. When someone's SG only lasts a few months, I always wonder if they're QDing it with something like #34.