If you haven't already made a firm decision on what you want to do, I have another option you may want to consider. Instead of getting different speakers, I would get a different amp. The 2's are a much better speaker all around (just my opinion of course). They can do things that the Harbeth can't. Your YBA is a great amp but I don't think its the best match for your speakers. I would look into an Ayre 7 integrated. There is an incredible synergy with the 2 brands. The effect on SQ will be huge. The Ayre can take advantage of what your speakers have to offer in ways that the YBA can't.
I don't have the Ayre 7 myself, but I do have Vandersteen 2's and 3's and power them with Ayre V5's. I know first hand that its a great match. If you have any specific questions, post and I will try to answer them as best I can.
I don't have the Ayre 7 myself, but I do have Vandersteen 2's and 3's and power them with Ayre V5's. I know first hand that its a great match. If you have any specific questions, post and I will try to answer them as best I can.