Well I've managed to break zone 70 on Syncopia after sitting on 63-64 for the last couple of days.. I know I can make zone 75, I was going along just great but I had to pause at zone 67 when the sun came through my windows and blinded me :? as soon as i started up again I ping ponged around and lost almost all my shield. I'll give it a break for today and come back tomrrow.
*edit* scratch that I just got to 75 on my first try this arvo, I only lasted like 2 seconds after supersonic though, I might try get to 80 tonight. Zone mode is aesome fun.