I have 2 Aero's -
There best feature would have to be that there bomb proof!
They probably don't spend as much, in advertising and pro sailors, as some of the leading brands, but the're not far behind (if at all) in design and the benifits are passed on to the buyer. A lot of there reaserch is done in West Oz. I'd put them on par with Ezzy's and Loft's.
As far as pentex goes it a reinforced film of some sorts greater UV resistance and tougher to rip, and if it does it usually dosnt take out the whole panel. The feel isn't quite as crisp as Monofilm but that doesnt bother me.
Aero did have a design glitch with there VMG's last or season before last, and from memory did the right thing and withdew that line for the season.
Not sure of any retailers down Victoria, but you can buy online from:-
http://www.caloundracitysailboards.com.au/in QLD
OR
www.shoalhaven.net.au/~macsurf/drsurf.html#anchor494636In NSW
I've delt with both before and there both good people.
DavMen