for LAMP fedora is rock solid.As for KDE vs Gnome....it depends on the user....there are power users who prefer to do most of their stuff from commandline, desktop wont matter, and Gnome wud suite such people better as it hogs less resources.For a normal user who wants all the eye candy and stuff, KDE still rules. In fact I still use KDE even 4 yrs after switchin to Linux.Even though I use commandline for many of my tasks , I prefer KDE. So its really down to personal prefs. Also application support is better now in KDE than Gnome (I now we can run apps irrespective of the desktop ..but i am talkin abt native apps)
I used to prefer KDE but now I simply prefer GNOME. The apps are decent. KDE apps are certainly friendlier but those few apps which are better in KDE can always be launched in GNOME. No hassles. GNOMEs way faster, more memory efficient and cleaner look appeals to me.This is coming from a KDE guy who has been a staunch KDE supporter and GNOME critic for the past 5-6 years. So you guess what my word means Anyway, to each his own. Use both. Decide what works best for you. Use it
Anyway, as far as KDE vs. GNOME, I've always prefered KDE due to high customisability.
Also, try sending suggestions for improvement to the GNOME developers. They are lazy bastards. They don't believe in user opinion. The development of GNOME is so slow, in the same time, more than 4-5 versions of KDE have been released. Compare for yourself -