Alex DM20 vs Alex MX22 (rims)

[Sandman1]

G'day all,
I've got both an Alex DM20 and an Alex MX22 rim sitting here, and I can't decide which one to put on my bike. I don't really know which is meant to be the better rim. The MX22 rim seems to be wider in total width then the DM20, but the DM20 is made of thicker metal.. So, which should I go with, considering that I don't feel totally confident in putting a Maxxis 2.7 Mobster onto a skinny rim?

 

[CHEWY]

ive got mx-22's and there seem to hold up allright. i think theyre the better rim out of it and the DM20...

 

[Ty]

can someone please give me a run down on the alex rim range, i've never really been exposed to them before.

thanks
Ty