I figured I wanted to know if I was part of a minority waiting for the OP2 before buying. Note: seeing as how the OP2 may/may not ever exist, this poll may be invalid.
I already have a Pandora (a Rebirth unit), and I plan to buy another one in the near future (a 1GHz unit). And if and when a Pandora successor is released, I'll almost certainly buy it.
You need more options. I have a Pandora, upgraded from classic to rebirth. I will be tempted to buy a successor, but that depends on many things, such as my finances, the unit's specifications and price.
I guess though, to answer your question, that very much depends on your situation. If you have the money and are keen to get started - I'd recommend buying one.
I think you can take it read that if you can't afford it, you won't buy one. Regarding specs, that does vary I guess, but personally the specs I've heard bandied around mean it'll be a decent step up from the Pandora, so it just depends whether you need world-beating, or just good enough.