Root or No Root?

I'm sort of in the same boat. I rooted my EVO 4G but not my 3D and was fine with it. Rooting as of now doesnt have too many perks besides cool mods and stuff, as most ROM are pretty similar. Unlike you, i wasnt 100% happy with stock (prefer a menu button opposed to the software one on screen) so i rooted to get those little features. Some cool features you're missing out on are: Dual core Mods, button remapping mods, cool splash screens, camera sound mods, less bloatware, and just an overall more customized experience. The roms on the 4G LTE are very stable as there isnt much to work with yet.