River, none. Never even seen one. This statement of yours: I believe it's much more that which makes them unsuitable for many folks than inadequacies of the hard/software systems themselves is the truth for me. When times of high concentration on music (such as for example, these past days with the 11R, where I have been playing and listening for hours) happen to me (and it happens from time to time) I always re-dig out the truth: it's beyond the gear. It hits me again and again, like a sort of "illumination" (derived from the Italian concept, hope it means something equivalent in English) strikes me. I was listening to myself and my timing nuances, struggling to get the feel as I was doing takes over takes of soloing and rhythm parts with those two-three tracks I proposed and again it struck me as it's not the tone - intended as the technical sonic peculiarities of the amplifier and the instrument - that matter. It's the mind and consequently the body (hands, arms and the whole body approach) that make a performance worthwhile. Funnily, IF the performance is good, the perceived tone can become interesting. Weird paradox, don't you think? If one tries - as an exercise - to listen to Free's performance on "All Right Now" in its first release (back in 1970) one will hear as the guitar (amps) sound... well... crappish. Even for the solo. It was nothing special. We're not even sure the song was played with one of marvelous Kossoff's vintage Les Paul Standards. Rumor has it that it could be a strat. I can't say. Still, that guitar sounded violin-like. It was his timing and intention. Vibrato. Touch. The quality of the recording lets much to be desired as well. So much that - in order to sound similarly on the rhythm guitars, I had to "degrade" the "quality" of the rhythm guitars I had recorded via equalizer. It's a complex, yet amazingly fascinating never-ending journey. It completely catches my mind and whole essence. My wife was watching me these past days, I was so much into it that anything happening around me barely touched me (including changing my two years old son's diapers). It's the player. There is a but(t). The "but" (however) is, that inspirational gear can help the player do better at giving his best. Guitars, amps, microphones, rooms and farts. It only serves as an additional inspirational element. There, I said it (sighs).