I use the pros, they've got a bite to them at first but once they settle they are brilliant , I've had them last for about 15-17 shaves , I'm pretty sure some chaps have had them last for up to 30 shaves so you certainly get your money's worth.
I personally haven't used any others but there is no harm in trying, if you don't get along with them I bet you'd be able to offload them fairly easily.