If you are considering the RB1000, you might want to take this advice posted over on Vinyl Engine:
"Re: Rega RB1000 over RegaRB700
post by zharca ยป 18 Apr 2012 18:37
If you are thinking of buying a top Rega arm like the 1000 then it may be worth waiting a while because the new 303 arm tube is going to find it's way into the rest of the range and it should make a big improvement as it really is a much better design.
If you take a look at Paul Miller's graphs, the 303 now measures better than the 1000, so if a "1003" version arrives with the new armtube plus the RB1000 stainless base and wiring it should be a very good arm indeed."
"Re: Rega RB1000 over RegaRB700
post by zharca ยป 18 Apr 2012 18:37
If you are thinking of buying a top Rega arm like the 1000 then it may be worth waiting a while because the new 303 arm tube is going to find it's way into the rest of the range and it should make a big improvement as it really is a much better design.
If you take a look at Paul Miller's graphs, the 303 now measures better than the 1000, so if a "1003" version arrives with the new armtube plus the RB1000 stainless base and wiring it should be a very good arm indeed."