boring? I don't know about that. It's one of those synths that lets you come up with stuff really quickly. The simple little sequencer, the fact that it's not really the most complicated synth in the world, it's very easy to get what you want out of it, as long as you're within it's range. However, it's a rubbery roland synth with THAT acid sound if you want it. So, it helps if you like that kinda thing. You can sit there droning in acid mayhem for hours if you pair it up with like a 303 and a x0x drum machine.
Nice filter, sterile but strong oscillator, one of the tightest envelopes found on a synthesizer and a very good LFO. Actually this synth taught me why analog envelopes and LFO's have a distinct impact on your sound as well. (probably modern digital modulators can be very good but the vintage digital ones are not)
Still love the way you can let this thing smoothly erupt from a muted squelchy acid lead to a full blast PWM+Sub dominator sound. Probably you'll be doing just that for hours on end once you've bought it and never get bored.
It's not uncommon to see people that had access to them while they were still dirt cheap to have two 101's and a 202 or something in the same studio.
That said, for $800 you should start to consider new synthesizers instead. Just $200 more for a SubPhatty. Or a MS-20 mini and a few lapdances. Perhaps the 202 for $500 is the biggest steal of the moment. Grab them before the internet wakes up from it's "it's not a real 303 and the sequencer sucks" coma.
Yeah I had a blue SH101 for a while and it was boring and not versatile at all. Really I guess depends on what you want out of it. Bang for buck is not on the list...there are tons more synths out there in that price range these days that I would take any day of the week. Any of the new monos for example would be a lot more flexible and interesting to me, and in fact there are old polys in that price range capable of a similar sound (such as the Junos).