I have to say I felt the same way at first after only flash maniac on the 4G. I ended up buying my EVo3D for $49.99 on a Dec 7th special and gave my 12 old my Evo 4G. I stay flashing her phone still even though I moved on to the 3D. I kind of understand the "no issues" deal now though.
When I came to this forum I noticed a huge difference in traffic, active threads, roms and etc. I almost got rid of the phone because flashing roms was big for me on the 4G. However I got used to the 3D, no issues really, and the ROMS I've tried have been SOLID and different, (Clean Rom, OTXE Titan, Warm, Infected and more recently the Xplod Roms). Plus I gotta just got a Transformer Prime so now I'm starting to feel like I been neglecting the 3D although the tethering makes it a perfect combo..