I EDCed a 705 for more than a year. It's an excellent knife. I owned three of them at one time, ATS34, 154CM and M2 with CF handles. Sold them all a while back now.
Over time, I came to want something with a wider blade and a higher grind. Right now, I mostly switch off between a BM Vex and BM mini Ritter--mostly the Ritter.
As I recall, the 707 gives you a little higher grind which I would prefer and I think it's a better looking blade than the 705. But I'd want a 705 frame for it as I'm not a fan of metal handles.
Phil