Whats the difference between the top three 5 speeds

I'm in the 5 speed OD market craze. I have been reading about these top 3 companies and their transmissions but none are actually out yet.
Keisler (RS 5 speed)
Passon (A833 5 speed OD)
Mcleod (5 speed)

I know the passon will be $4300 for trans and shifter. Any idea on the cost of the other two and what you get for that price?

My car is currently a auto so a more complete kit is better for me (trans, shifter, hump, pedals, clutch, bell housing, etc.). I figure I'd like to have something that can withstand up to the 600hp/Tq range. I heard that the RS from Keisler doesn't require to much hacking of the tunnel. I know I'm already gonna have to cut some to have the hump put in but the cleaner the better for me. Passon is a direct swap from my understanding. I don't know anything about the Mcleod other than something about the tail shaft and speedo not working correctly.

Can anyone shed some light on any of these units?

Jason