Strip cutting and then using templates help me to be way more accurate, not to mention saving a lot of time.
Some of the templates/rulers allow you to cut the points off of pieces for more accurate piecing, and some templates also have places cut out to allow you to mark where to start and stop sewing for Y seams.
There are very many specialty templates out there now, many with other built in features like for squaring up blocks or windows in the center for fussy cutting. I check out new ones to see if I think I would ever use them, and the ones I have bought have more than payed for themselves IMHO :D:D:D