They certainly are nice tables. I bought a Star Sapphire MK III as a proof of concept table. I hated the oak finish, but loved the table. I ended up buying a Cosmos Eclipse in bloodwood, and have a Nova Eclipse on order for my casual table.
Belts indeed do matter. I had a worn out one on a Well Tempered Reference table, and it sounded good but the belt was shot. I ordered a replacement one from LP Gear, which is actually a very good replacement option. Not only did the speed come back in line, but the table was more immediate and focused sounding. A nice improvement for a fairly modest price.