There was another brand that made a good 5 speed gear set that I was looking at when I did my RA gears. I have been racking my brain trying to remember the name of the company. It hit me a couple of minutes ago. M Factory does a 5 speed, but they also do a bunch of custom stuff too. I don't know anyone that has used them, but when I did my RA gear set, I was looking into these. They offer straight cut and helical gear sets. If you want to go as far as choosing each gear ratio, you can, but they also have a set gear set for the WRX 5 speed tranny that you can get without having to figure all that out.

They were a little more pricey than the RA gears. The determining factor for me was price and that the M Factory 5th was just too short for daily driving and I spend a lot of time on the freeway. But it is another option for 5 speed gears. I don't remember if they made a 6 speed gear set or not.