I had similar complaints about my 6 speed when I first got it, but after putting on 10,000km (about 6,000 miles) it is smoothing out and getting easier to shift. Not sure if this is me learning better, or if I've been grinding the hard edge off the gears (ha ha) but I just noticed a real change (for the better) after about 9,000km.

I still have to do some double-clutching in the mornings until everything gets warmed up, but after a good 10 mins its just like buttah!