I too owned a pair of TC50's and they were indeed great spks. I found a pair of used maggies(smg'a) that I thought were a definite upgrade but alas the low end didn't quite get it. You might want to listen to the meadowlark kestrals, there easy to place and sound great. My room is about the same size and I found that with them away from walls they do there magic well. Good luck
upgrading from Spica TC60's to ??
I have had the TC60's for a long time, and the TC50's before that. I feel I need to upgrade under the assumption there have been some advancements over the last ten years. Other than that I love my speakers. My electronics are pretty good including a CJ 11A, 70watt amp. I have a small room and am considering a small/medium floor standing speaker. I would like to hear from someone who had these speakers and found something better, not just different.