I'm a guy with a larger girth than the average, I use XL condoms.
I've been caught out many times trying to struggle into average condoms, and it's never pleasant. Not to mention it's less safe, as normal sized condoms on a larger guy increases the risk of breakage.
Occassionally I've brought my own, but women seem uninclined to want to use them.
Do you tend to have a supply of larger condoms for the larger guy?