I owned and sold an OP-1. It is a beautiful piece of hardware and its analog controls and mashable buttons provide a more tactile experience than an iPad does. That said, the sounds it ships with really leave something to be desired. My subjective opinion is that anyone who's played with a best in class software synth (i.e., equator2) is going to find themselves feeling pretty limited by the blippy tones that you get…
As someone who produces electronic music I kind of dig the limitations of the op-1. At a 2k price point though with those limitations in mind I can't justify the price. Even at ~1300 or whatever the old model is going for I can't justify the price. For cheaper you can get both a digitakt and a digitone, which I own the latter, and they sound 1000 times better than the op-1 although each respectively do quite a lot le…
You could probably get an iPad, a USB midi dongle, a midi keyboard, and a whole suite of software for that, too.