Can't remember off hand its a while ago I got it. If I bought one now I would get that milwaukee one. It looks the biz. I think I paid £80 or £90. I would pay the extra next time as replacement batteries are cheap, so are chargers.
Occasionally staple into solid backing using the heavy duty staples.(£)
Wouldn't rely on it for that daily though.
When you have a s**t load of beading to do the battery ones are so quick. Battery lasts ages too.
Also without having to use effort to suppress a handle the accuracy is way better too - more consistent.