Which dx laser

simply which green dx laser is better
this cr2 one or the aaa true 30mw one

i quite like the cr2 one coz it can be taken apart and the batts should last longer

http://www.dealextreme.com/details.dx/sku.7883

http://www.dealextreme.com/details.dx/sku.469

The 'true' are tried and tested, many people have them here and are happy with them (myself included)

There is not much info on the other one, not even a review on dx, but if you like the cr123a get it, you never know till you try it.

only thing that puts me off on the cr2 is the size, and i dont think it would actually put out 30mw
leaning a bit towards the aaa one

It's not one of the ones on your list but I'd stay away from this one:
http://www.dealextreme.com/details.dx/sku.7544
I don't know if they're all like this but from day one I've had problems with it cutting out.
Seems like the switch because I can often press harder and it comes back on. But it may be that internal spring contact issue.
That would steer me toward the other case styles if/when I order another one.