Consider a 334. Very nice amp. I have Tylers also and love them. Owned several Levinsons and had a 334 in my system on loan. Liked it much better than the 27.5 or 331.
I also borrowed a friends 4BST and did not like it at all. To much energy for me. Have not heard the SST.
I also borrowed a friends 4BST and did not like it at all. To much energy for me. Have not heard the SST.