I’ve had an SB2 for 12 years now. It was my only good throw until fairly recently. It’s not an especially good looper, and it’s not an especially good 1A yo-yo either. It’s acceptable for both, but it doesn’t really stand out for either. It just oozes quality, though. The bearing is smooth as butter, and I can make it sleep almost twice as long as my Dark Magic (which is my only other “quality” yo-yo.) I suspect that’s because of the small bearing, the fact that there’s almost NO weight except at the edges, and that my 1998 vintage SB2 has no response system at all. The inside of the gap is smooth aluminum, so there’s nothing to cause any friction against the string.
The weight around the edge, small bearing, and modified H shape really drives me nuts, too. Since so little surface area hits your hand on the return, it can inflict some serious damage. It weighs a lot less than my DM, at 58g with the optional weights installed (measured on a digital scale), but it feels twice as heavy as the DM because of it’s tendency toward speed, and because of it’s slim profile.
If I were going to spend that kind of money on a yo-yo in 2009, I don’t think I would even be considering the SB2. It’s just not that great anymore. When I got mine in 1998, yes… Now, no… It might be a cool thing to play around with if you picked one up on e-bay for $30, but even then I wouldn’t want to use it as my primary throw. It really is an antique now.
Edit: I just re-read your second post in this thread… It really IS a good sleeper. If that’s your primary concern, you may want to check one out. Although, I still wouldn’t buy one at full price.