And £600 is still pretty much entry level for bike pricing!
Are they as nice as hydraulics? No, but they're pretty damn good and easy for anybody to maintain. At the level I ride, that's a worthwhile trade off.
I've done brake jobs on my cars and I've done every job there is to do on a bike short of replacing a headset or rebuilding a fork; I don't have a burning need to bleed more brakes.
I have cycled down some of the world's great mountain ranges, and I have never had complaints about my Spyke's stopping power.