I run a BJ4WE myself (bought it before the B44 was out). I would highly recommend the B44. The B44 is BJ4WE's twin brother but at almost $200 less...
My LHS and probably over 80% of R/C car hobby shops carry AE parts... The B44 is an awesome vehicle, since 99% of the design was influenced by the BJ4WE.
What is this Serpent that I'm seeing? Is this the new Durango? I always wondered what happened to them...
The Cyclone D4 is also a pretty solid car, before its release, I used to call it "BJ4WE - Version: Metric"
I would definitely consider the Factory Team B44, it's an AE (so you know it's capable of competition) and it's dirt cheap compared to other cars in its class (501x, D4, etc...)
If you really want a fancy version of the B44, go for the BJ4WE. It's an awesome vehicle, I wouldn't trade it for any other 4WDs out there... If I was to buy one now, I'd go for the B44 since I nicknamed it "BJ4WE - Version: Mass Production"
RIP TAP RC