Frank is from Seymour Duncan
I haven't tried out the Axon yet, but out of the Roland gear I've tried the GR20 tracked best, and was basically flawless in that regard during the short test I had. It tracked quarter tone bends and stuff like that without issue, and didn't have any immediately apparent lag. But it's a limited unit in terms of sounds and programming. To my knowledge Roland's synth units trigger their built in sounds with very minimal processing. The MIDI output requires more processing and lag may become more evident. I've had a good trial of a GI10, and it seemed fine, with the tiniest of latency. I assume the GI20 is better. The new VG99 is pretty spectacular and has built in MIDI conversion, but it's pricey.
I'm really curious about the new stuff Frank mentioned. Is there any word of a new Axon synth/converter too?