Overall performance: Great!
Nice work. Beryl works out of the box (and 3d of course) on my laptop (Celerom M 1.46ghz Intel 950GM graphics card 512mb RAM)
Hardly any lag on the 3D effects.
Things that need to be taken care of:
When beryl is running, If I open a terminal, I get no text, the cursor gets stuck on the top-left corner of the terminal.
My wireless didn't work out of the box (although it does in SOHO A7 which uses the same kernel and modules).
The pink-ish default emerald theme should be changed...
BTW, Nice work with the graphics blurymind.
Quickie hack to get the terminals going:
click the terminal button on the panel, you will see the buggy terminal, press CTRL+SHIFT+T
That will give you a new tab in the same terminal window, that one works