Your Input, Changing from McIntosh C50 to McIntosh C2500

I have had a McIntosh C50 pre-amp and MC452 power amp (both solid state) for a few years now, am happy with them.  I've shied away from tube gear, as in the past I found the tubes in my old power amps deteriorated over time, but folks tell me that tubes last a long time, when used in "low power" applications, like that of a pre-amp.

I use an external DAC, so the one built into the pre-amp would not effect my buying decision.

I also have an external headphone amp and subwoofer pair, so having three balanced outputs is the best setup (both these pre-amps have those).

Thoughts about changing out the C50 for a C2500?