I think your amps are on par with the rest of your system. It seems to be a nice budget system. To move up, you will need to replace each piece, one by one, until you have a system of the next(or higher) level. Carver amps are OK, not great, but serviceable. And in a HT system, they are fine. The step up to their Lightstar/Sunfire products is a big one, if you have brand loyalty. But, if I was upgrading, I would explore everything to see what I liked, and go from there.
Are Carver amps worth a damn?
i have a system which I use for both home theatre (70%) and for music. It is comprised of a Theta data basic transport, a Nakamashi cr-2 tape deck, a Marantz AV-550 preamp /tuner, a panasonic dvd player and a proscan vcr. For amplification I have been using 2 Carver TFM-35's and a TFM-15 for the surrounds. I have an unpowered sub so I get 1 channel of 250w to the front 3 and the sub, and 100wpc to the surrounds. For speakers I am using Definitives all the way around. Are the amps my current weak link in this system?