Ditch the fusion!
Seriously, with those 4/5 bladed razors, the blades are too close together. They get clogged up with hair too easy - the hair doesn't rinse out easy, blocks the blades and you end up going over the same spot many times over, causing an increase in irritation.
I also have to shave daily for work. Get a Mach 3 and use the turbo blades. Rinse face well with hot water before shaving. I find alternating when I shave helps too - one day, before I shower, the next day, after I shower, etc. (crazy I know - but it works for me).
One of the best shaving gels I've come across is the Sainsbury's own brand one - comes in a grey tin.
Hope you find something that works for you.