Parasound vs. Krell for 2 channel

Hey there - primarily a HT guy here. lately I have been listening to much more music though. I got JTR speakers but I love their sound/fullness for music. I have been running a Krell Chorus 5200 for 3 years. Love it, but recently added side surrounds. Grabbed a stereo D-Sonic to cover me...and tried it for my LR. I personally thought it felt a little thin/weaker, so I decided to switch back to the Krell for LR. So, I'm wondering if I should just keep it as is, or try to improve my 2 channel a bit. Would a Parasound A21+ sound "better" than the Krell? I have heard the Parasound has great control of bass response in mains, and that many people love their sound. I heard one once w/ Martin Logans and loved it. I also wonder if having 5 channels in the same box isn't as effective. I thought about going Jc1 mono blocks, but I don't have the space. Sorry this was so Long winded, LOL. But to all you out there smarter than me - should I check out a Parasound or just stick w/ Krell? thanks!