My apologies for not replying sooner...I've been having so much fun with the car I forgot to post back up, he he he.
I ended up getting 2 TA05-R's. One for the 23T class and one for the Tamiya spec class over here. The only difference is that the one for 23T has the standard White (Yellow) springs and the Optional Blue Aluminum motor mount, and the other car has a set of softer Red springs. They both have an LRP Quantum 3 ESC and optional wide pitch gears w/ one way.
I'm very competitive with both of them. A-main material just about every time.
Just for kicks, I picked up the new TB-03 to try in the Tamiya spec class. At first glance (and first weigh of the parts), it seems to be lighter than the TA05-R (I'll know for sure after it's built). Even if it's not, I wanted to try out the shaft drive, since that's what I'm used to (old TC3 user here). I have all the hop ups for it to include the one way, but I'm waiting on the rear input shaft and universal axles to come in this Friday before I build it (they sold out the day they arrived).
My only concern is that for the spec class I'll be running this car in, the gearing is fixed, as is the gearing for the TA05-R. It comes out to be that the TA05-R has a higher final drive by just a little bit, which means more top speed, no? Oh well, we'll see. I think the TB-03 will fair just fine. I'm even gonna keep the CVA dampers on it cause they are lighter than the TRF ones, and if you build them with a little "Green Slime", they'll be almost
Wish me luck fellas, I'll keep you posted.