I'll answer your question rather than get annoyed.
As for "most forgiving" they are all pretty much as durable as each other if you are getting the same thickness (mil) and overlam. 2 things you are going to look at are conformability and initial tack, aggressiveness of adhesive.
(in my experience) (excluding 3M 380 or any other super thin vinyls made for wall textures or deep recesses)
"premium Wrap vinyl" 3M is more aggressive on initial tack than Avery's 1005 Supercast Easy Apply RS, but if you get the non RS it's about the same. The RS allows for it to slide without being as grabby but you have to use more pressure on the squeegee strokes to lay it down bubble free, which can wear out the buffer on your squeegee faster and makes installs more tiring.
Orajet and Arlon have both had a more aggressive initial tack in my experience even after I gave Arlon's NEW improved less grabby formula, it still wasn't as easy to work with. But no matter what vinyl you use, you MUST let it cure all the way before laminating it...or you will lock the solvents in forcing them to air out through the adhesive side, making it more aggressive anyway.
So I would suggest 3M or Avery. I like 3M's 8518 overlam better than Avery's. The cheaper vinyls aren't worth the savings up front because you'll spend more time and headache on installation. So if you are only saving $75 but aren't planning on just passing that exact amount of savings to your customer...just go with the "better" stuff. Either way...practice with what you'll be using, it just makes sense.
I try what the market has to offer and keep coming back to those 2 manufacturers. I haven't tried MacTac because from what I've heard, their formula requires extensive post heating and uses a permanent adhesive. But that was awhile ago. I'm sure they're new 6600 line is keeping up with the Jone's.
Again, this is just my opinion. All these guys have their own.