Tube integrated suggestions?

I am curious if some of your are using something other than an sim integrated with sim cd player>I am using 5.3 player with simple i3 right now eventually will upgrade amp.I am for the most part happy with the synergy of the two but would like to know if any body had sim amp and took the leap?thanks.Cd player and the rest of system stays so just people with the 5.3 and related product experience (adagios,az cabling as well).thanks