Do you what you feel like. If you loved your RSX to death...then get an RSX. If you want to explore into the boost world and have heard good things about it and the torque it gives, then go for it.

But if it was me and I had to choose between the two, I would definitely choose turbo teggy no matter what. Because with 12k, you could do soooooo much to a teggy, but with 12k, you could also just buy an RSX and call it a day for gas and reliability purposes.