[RC-Monster Mike]

How do you know you like that mount better? Have you ever used mine? My 808 mount is lighter(negligible), allows easy diff removal, will last longer without wear(that design will eventually develop slop), accepts mechanical brakes and is black anodized to match the car.
Nothing against those mounts(or Brandon, who used to be a good customer) - they look nice - and the top screw access is a nice feature on paper, but how often do you really change the pinion(and when you do, my mounts only require 1/2 turn with an l wrench to remove the motor)?
The 7075 vs 6061 thing is more marketing than anything else - either material is sufficient on these items. On a part this small, the cost difference is within a buck or two. Technically the 7075 is stronger, but also heavier. I choose to use 6061 because the 7075 is not needed - the strength is in the design(several thousand mounts sold and 12 +/- bent - way less than 1% failure rate). I do encourage you to try whatever you like, but perhaps you can reserve judgement on which one you like better until after you try both. :)