I finally stopped by Radius Pizza for a pie the other day. All I can say is that it was about time. I've been hearing about this place all over, between DCist, DR.com and eGullet. All of the feedback that people have been giving has been very positive, which is why I'm so surprised that I was as disappointed with the pizza as I was...
First, a plain cheese pizza is $17. That's too much for a plain pizza. That said, A large pizza is HUGE, measuring at about two and a half feet in diameter.
Second, the crust was just missing the right flavor and texture. It might have been that I had to wait till I drove home to eat it, but the crust had a very chewy texture to it. I ended up leaving most of the crust on my plate. The good thing about the crust was that it was the right thickness and when you picked up the slice, there was that ideal "floppyness" that you're supposed to get when you pick up a slice of NY-style pizza.
I did think that the cheese and sauce were pretty good and the pizza was topped with the right amounts of both, but it really didn't make up for the crust. I probably need to go and actually eat the pizza at the restaurant to see if it tastes any different.
Another thing I noticed is that the staff is very friendly and courtious. While I was waiting for my pizza, I sat at the bar for a short time and had a beer. The bartender was friendly as were the waitresses that passed by.