To me, the best SW set would have to be 10179 and 10030. I really wish I could have purchased the ISD when I was younger but like many here, I was still stuck in my dark ages. I remedied that by buying 10221 but it just isn't the same.
I just picked one up for $373. The box is huge. I've decided that I'm going to keep it MISB since I believe this set will continue to appreciate in value. I also have the BP and QAR but it doesn't even compare to this beauty.
I just got out of my dark ages and last month my wife bought me 10240. I never opened it but I got hooked and bought 10221 SSD for $320 on Craigslist. Then I went nuts and bought 10179 MF used but complete on Craigslist for $700 and now I just received a 9492 Tie Fighter, from my brother in law as a gift.