Beginning '09, I will start flying CO as full-time as possible.

Since I am PHX-based, most of my flights will be connecting me through IAH.

Final destinations are places like BNA, BTR, MIA, PHL, etc.

It looks like most of the PHX-IAH legs are on 7-series equipment, but the connections to places like BNA, BTR, are on RJ's.

I read on here that the RJ's tend to operate out of Terminal B, whereas all other mainline A/C operates from the others.

What do you all consider to be a decent connection in these scenarios? Also, on flights coming back through IAH where I am on 7-series, do I have any other connection concerns to be aware of?

TIA...