[Asphyx]

Bored's is great for cleanliness and speed...
Can't comment a lot on Scotts because I tried the kitchen not the actual ROMs.

But I have found MightyMike's to have a full complement of apps and enhancements built in and it is as solid as a rock!
Mike will only include enhancements that are stable as the goal of his roms is to pack in a good set of bells and whistles that are all stable.

Mike happens to like a lot of the same apps I like and he cooks them in...
Just saves me a lot of installing after an upgrade! LOL

For the record though when I first decided to flash my TP, Bored's reputation here made me trust his work for my first try...

And any ROM that has GPS working in it is based of his work!

My only other suggestion to you is if you do flash make sure you get a good handle on what cabs you need to install on a clean rom...(think HTC X Button)
It will save you a ton of time later!

For your first flash I would also shy away from any of the rhodium enabled ROMs....At least until XBMod and the crew finish work on it...It will help you figure out which ROM is actually better without any of the Rhodium stuff throwing you off.