i am in a similar boat
icame down to the omega and triumph. i choose the triumph for the speed breech the break open action.
I was going to go with camo but walmart has the all black same gun just black for 150 dollars cheaper then what i found for the camo.
i think it hold up good if you take care of it. I had a 500 used was like 5 years old when i bought it and it need not have one issue with the camo.

I also like the thumbhole stocks on the omega. i do not like the lam. stocks expecly for hunting.
I think if you take good care of the camo it Will last as long if not longer then the stainless or blue.
Also i have seen many a stainless barrels rust. stainless is not rust proof just not as likely to rust as reg steel.