Edit: took out my mistaken application of āaxes lettering.ā
Hereās my current take on the status of MPE controllers (long-ish review follows). I now own three MPE controllers: Linnstrument 128, Push 3 Controller and Osmose. They all do some things really well, but also have their limitations. I will be keeping all three.
The Linnstrument is great for setting up modulations that I can use per note in three dimensions with multiple fingers without having to move any fingers across space (I can keep a finger on a note and apply pressure, slide and bend by shifting the angle and pressure of the finger without actually moving the finger anywhere). This is due to its intentionally designed small pads and pressure travel. This really appeals to me. The drawback is that there is almost no travel for any of these dimensions. In other words, its possibilities are also its limitations.
The Push gives me lots of spatial movement on big pads for slide and bend, but little movement for pressure. I am still at the beginning of learning the Push because shortly after I bought it, I moved, tore down my home studio, and have had other life issues get in the way of really getting to see how it can be used to control Live (which is also new to me, been on Logic for nearly 20 years). I am in the process of settling my life down and setting my studio up again, so am looking forward to getting to know the Push and Live (and the Osmose) better.
The Osmose gives me great travel for pressure and offers truly stunning sensitivity for this so you can just barely touch a key and create per note sound modulations with it, but you cannot manipulate both pressure and slide at the same time, slide is aftertouch onlyāit comes into play only after moving all the way through applying the pressure travel). Pitch bend on Osmose is for pitch slides only (when using it with the Haken sound engineāI havenāt yet used it with the rest of my studio to see about setting up pitch slides to control other parameters).
All three have great build quality, with Linnstrument at the top (partly due to the great support of Roger Linn) and Osmose at the bottom (but still feels really solid). Push 3 has had a lot of software bugs, but that may be due to its very high ambitions for what it is designed to do (eventually).
If I could have an āMPE controller to rule them allā (for my purposes) it might be the Roli Seaboard. I NEVER use horizontal play for pitch bend. In fact, I donāt like the way pitch bend sounds. Not meaning to criticize anyone who does, but it all seems to sound like a whammy bar on a guitar to me, and I have disliked that sound since leaving Heavy Metal behind when I discovered āAre We Not Men We are Devoā and such. So, I really just think of horizontal play as another dimension for controlling other modulated parameters. The problem with the Seaboard (as others have mentioned) is that Roli makes it. I owned a Seaboard Block to try it out, and loved what it can do (pressure and slide really shine), but it just stopped working after a few months, and despite several attempts, Roll never responded to my support requests. So, never again for that company. I do still use Equator 2 (Roliās MPE-based VST) with my Linnstrument (and plan to use it with the Push and Osmose). I think it has lots of potential and love the way its UI lets you see all five MPE dimensions working all at once.