Until recently I always used the corded Fein ones, can't fault them. Thing is I often only need it for a quick cut on site, plugging it in was an extra hassle and sometimes I use it up a ladder so it made sense to go cordless. I'm on the Makita battery platform so went for theirs, it's definitely not as smooth as the Feins, more vibration but like I say it's only for quick cuts, if I need it for something serious I can blow the dust off the Fein. I got the Makita model where you don't need an Allen key to change the blade, the little lever you lift instead is plastic and feels a bit weak but hasn't snapped yet! Regarding blades I use Saxton.