ultralight contruction

In the market for a TT. Im trying to do my homework and having a tough time determining what construction materials and practices are used brand to brand on what the industry calls "ultralights". Specifically aluminum constructed units..

Im considering the "bullet premier" units but Id like to know how they all stack up..

Most importantly the floor construction (lots of soggy complaint posts) and the lamination material and techniques.. for example are they all vacuum bonded? I know from my racing days that vacuum bonds are strongest..

I did a ton of searching and cannot find much. Can anyone point me to a source please..

Also any comments on the Bullet Premiers and competition to those units would be appreciated.

thanks

Oh yeah this is my first post and unfortunately for you all it wont be the last :)