4.14 user here, no problem at all.
However, I don't recommend for ppl who are very busy with their lives to upgrade to vista, it took me at least 4 hours to upgrade from XP to vista and plus about 1 hour to upgrade to SP 1, and i haven't included the time needed to clean those temp files, xp directories during transition to vista, and as usual there are still some tweaking to do after upgrade complete. Slower startup is expected but im glad only longer for few secs (around 40-50s).

And I noticed that using Vista definitely need 17'' monitor and above, those icons are freaking bigger than XP even its in minimum size, but overall i'm satisfied with Vista SP1, nvr had any problems or major issues after 2-3 weeks using it.