I choose the Leema amp via a blind test against 3 other amps. I used MA GS10s for the test, but at the end I also compared the RX1s against the GS10s with the Leema amp (not blinded). Amazingly I thought the RX1s sounded better (or at least no worse) - which really didn't make any sense to me. But when my blind testing 'jury' of 3 friends all agreed the RX1s sounded at least as good I put my doubts aside and was happy to keep the savings.
I didn't know that SACDs were around these days. I will keep an eye out for them. I typically buy CDs & rip them to FLAC files. My home media server sends the FLAC files via USB to the rDac. It sounds great, but I think I could do the same with SACD as well.