I just recently got my SL-1500mk1 and it works perfectly, and its great. But now I see that I can get a SL-1800mk2 pretty cheap, so my question is would it be worth it to me to buy the 1800 and sell the 1500? I'd like an upgrade path close to the 1200, and it seems the 1800mk2 is close. I know it seems silly, the two tables being similar, but just curious as to your opinions.