Dynavector Karat 17D3 would be a good pick. I have used it with a Rega 25, Harbeth Compact 7, Quad amp/preamp and thought it sounded great. See below for another recommendation for the 17D3 ($1,150) or XX-2 ($1,950). Retail prices shown for your reference in (). I have not heard the XX-2, but based on the comment below, and my own experience, I think the 17D3 is a better match for the Harbeth. The 17D3 takes some patience to set up because of the very short cantilever.
Ejlif (Quoted from earlier in this thread)
I've had the 10x5, 20xl and 20xH the17D and the xx2mk II. The 20x is a marginal step up the 17d is huge as is the xx2. The 17d is so clean and clear sounding you will be amazed. In a way I like it better than the xx2 but I think the overall balance is better with the xx2 you can't go wrong with either. I think you will certainly like the 20x better than the 10x5 but if you are looking for a big jump go at least to the 17d.