AL vs. Steel tanks

i have been diving for allmost 1 year now and i want to buy my own tank
mainly so that we dont have to be back to the dive shop before they close to
return it.

I was just wondering what would you guys recomend. I do mainly fresh water
diving. One of are friends that we usually go with has a AL 80 and me and
my brother just arnt sure what to get. i would kind of like a bigger one
because me and my brother both are bigger and use a little more air than the
average person.

Im about 6'2" and weight about 250 lbs. I was just wondering what would
some of the pros/cons of AL vs. Steel and how big of a tank would be to big?

I know some of the steel are HP and i can switch my regs over to DIN for
about $50 so that wont be a problem.


thanks for any info you can give me.


Justin