Funny

It's got an N shape in my experience. Stuff someone recorded just because the're horny sucks. When they know how to operate a camera then it'll be the most genuine fulfllment of whatever specific thing you're into. When they're being payed to do it you can tell everything's kinda stilted and it sucks. When they have enough budget and acting skills to make it theater quality then it's good again (though I've rarely seen that for whatever reason).

Nah, it's probably more a taste kinda thing. I dislike most produced porn for a variety of reasons, some being unsure on how ethical it is. I feel more comfortable with people sharing their personal nudes for people to see so I generally prefer amateur. Amateur also tends to have more realistic standards for beauty and sexiness? You get less of the cookie cutter huge dicks and either huge tits or barely past teen stuff.

There's also sometimes just a more general preference for less... produced/company/money made stuff even outside porn. Cosplay I generally am uninterested in the lewd stuff, but even outside it I like seeing people who worked hard on their outfits on their own time, and am far less interested in professional cosplayers who have whole teams etc.

So sometimes it's just preference, not we didn't see the right ones.