Best Kind Of Staple Gun

I am covering a dining chair seat and my old manual staple gun is very hard to use and the staples only go part the way in. What kind of staple gun do all you DIYers suggest....electric or manual and what brand and also what size staples please? The seat board is not very thick. I have looked online but most of the electric staple guns have gotten bad reviews. Thanks for your help as always!
  34 answers