I have an Avatar SE and have no regrets. It was a clear step up from the Vsi-55 for me. Sometimes I think it has less bass, other times I think the bass quality is just better. It certainly has better clarity, soundstage, and is much more transparent in my system. My speakers are Verity Tamino 89db 8ohm min 6.8, not too hard to drive.
In the end it is more $$ than the others you are looking at but I bounced around a bit too much before settling on the VAC. Call it learning or foolishness. I haven't heard your speakers but can vouch for this amp.
In the end it is more $$ than the others you are looking at but I bounced around a bit too much before settling on the VAC. Call it learning or foolishness. I haven't heard your speakers but can vouch for this amp.