I have an Ultimate Seat plus Vic driver seat back, asking $500. 00 + shipping. The seat was purchased in April 12. The back rest came with the bike. Nothing wrong with either, seat was an impulse buy because I had ultimate seats on all of my rides except the Venture for obvious reasons.
I don't yet have my XCT as I'm waiting until next spring but are you not as happy with the Ultimate seat on this bike as you were on others? I had one on my Honda VTX 1800 and it was the best seat I ever had. I'd order another one based on that experience but seat comfort can vary from bike to bike.