I've used Stroboframe brackets before and they are very good but don't really allow you to engineer your own solutions too much.
The bracket I use is made by Custom Brackets (
www.custombrackets.com). It's a little bulky, heavy and pricey but it has a lot of places to mount other things and allows you to control the height of your flash unit. It also lets you rotate the camera rather than the flash, which is a personal preference thing. Sometimes I use it with my Nikon flash and other times with a Lumedyne classic head with a diffuser that looks like the old coffee can lids.
The Nikon SB-80 flash came with an Omni-Bounce type of diffuser that works very well. To deal with high ceilings I taped a small strip of thick white paper inside the top of the diffuser. That way when the head is angled up your not wasting light by throwing it behind you and it helps add a catch light to the subjects eyes.
Hope this is helpful..
Israel