Opinions on a new amp/pre

I recently purchased Paradigm Studio 40v4's.I also have a SVS PB12 NSD sub. I currently have Caver CT7 pre/tuner and aa Carver TFM 24 amp. My cdp is a Marantz CD5001. I have had these since 91' (not the cdp)when I bought them new. I have considered a new amp and pre combo, however I feel it sounds very good right now. The speakers are my first audio purchase in 14 years, so obviously it sounds better to me already. I'm not a "critical" listener per se' but I feel I may get a little more out of my system.I'd be looking in the $1500-$2500 range for both. I have been looking at the Rotel line. Will it be better sounding? Perhaps. Or am I just suffering from "I need new stuff" syndrome. All comments/suggestions are appreciated. Even sarcasm and smart azz ones.(I do have a sense of humor, albeit a sick one).