Atkins Apex Seals

[vex]

Alright, I'm planning on picking up some from you guys in the very near future but I have a few questions I'd like to ask first:

I'm planning on building a Hi-Comp Turbo motor with an active 6PI that will not see more than 8psi on any given day until I have a spare motor ready to be dropped in. I would like to know exactly what the benefit or cons would be with using the different seals you sell, namely:

The 2Pc Atkins seals
The 2Pc Atkins seals cryogenically treated
The 1Pc Racing seals

All these will be 2mm.

I'm only planning on using the car for "spirited" driving or a few runs down the track, but all in all I need it to be reliable more than anything else as a DD.