Hey, don't let the lack of an SACD player deter you, the Merc is a hybrid, will play on any CD player. I'm not familiar with most of the recordings you listed above, but I would tend to go for one of the earlier recordings (go by the recording date, not the release date, if you can find that), while Rostropovich was at the height of his powers and before he turned a large portion of his time to conducting. I think the first one on your list would likely be a good one; I like the performance on Erato, but it's apparently out of print.
