I really can't spend more than $400 so the Ping G10's are gonna have to be a no, unfortunately. However, the Burners do seem like they would be nice, but I'm not able to find them as cheap as you said. I searched on Dick's Sporting Goods, Golf Galaxy, and GolfSmith. As for the Callaway driver, I really don't mind the shape at all and found a good deal on E-bay for around $100. However, I don't think my local Dick's has this specific one to try out.
The closest golf store is around an 1.5 hours away. Other than that, I'd have to go to Dick's, but seem to have much more limited choices.