I have used bosch and dewalt blades and they're better than the cheap ones but I don't think they're so much better that they're worth paying up to 4 times more per blade.
So I go with the cheapo ones from toolstation, the shark tooth ones eat through wood and last well as long as you don't hit any nails.
There was a pack of three bosch ones from poofix for about £15, that's a damn good price for them, not sure if they still stock them as bosch have changed the shape of the fitting on their tools and their blades are pretty much all updated to the new shape now.