I subscribe to paid sites, but I usually rotate them. Some let you download without limit, such as Men.com and Sean Cody (not allowed here), but SC's website now charges you per download, unless you are grandfathered in (I am), but they have linked sites which you can subscribe to, such ass Men.com, where you can pay a one time fee that lets you keep your membership forever, as long as you maintain your membership with SC. But, by the same token, you can join Men directly and have that same deal for their other sites. They are also linked to Bromo, Reality Dudes, Twink Channel, Black on Black, and Men NC (I think it's Naked Celebrities). A little tip, during holidays or special promotions, they will discount those sites. E.g., I joined Men.com because they let me join for $49.97 instead of $89.97, their usual fee. You can also do a monthly fee, but the one time fee is much cheaper in the long run.
I've also belonged to Corbin Fisher (also not allowed here) and they have unlimited downloading. Titan Men only allowed 29 downloads per month, but I've heard that they haven't released anything new in 6 weeks (see Str8UpGayPorn.com) so they may have closed shop. As far as I know, almost all studios allow unlimited streaming, unless they are a site like Maverick Men or Deviant Otter, that let you buy your streaming in minutes, so if you want to watch more, you have to pay more. All in all, my experiences with them have been positive. Btw, when your subscription runs out, if you say that you want to cancel, they all offer you deep discounts to keep your membership
I feel that since I download a lot from this site, I should support paid sites, a little, or they'll all go belly up. They can't produce videos for nothing, but not everyone is in a position to be able to afford it, so it's up to each to decide for himself.