Interesting discussion this. I'm thinking there are many brands of brake parts, especially when you start looking at aftermarket parts. Premium names like Girling, Brembo, Lockheed, etc. which often command a small premium in price and then Apec, EBC, Mintex, Bosch, ATE, etc, etc. which are more likely what I'll be buying. I bet they pretty much all make parts for our FIATs? Years ago I found local trade factors sell me stuff from trusted brands at prices which rival those on the internet so, for many years now, I've tended to buy from them. Now and again I'll check on line, but there's seldom any real advantage. Only very seldom do I have problems with wrongly supplied parts and it's very easy to pop back and get them changed if this does happen. Where there's difficulty in identifying a part I just take the old one with me and a bit of paper with the vehicle reg no and VIN.
I'm not aware of any difference in friction material for ABS systems as against in a non ABS but I've sometimes found two identical pad recommendations except that one has a wear warning wire whereas the other may not. The set without the wire is often usefully cheaper so I would tend to default towards that set - all other things being equal - as I check our cars so often the wear indicator becomes almost redundant. In fact, over the years, several of the vehicles in the "family fleet" have suffered damage and/or corrosion to the wiring and/or connectors in the pad wires. It can be a real "pain in the bum" trying to repair this - connectors are not easily available and often come complete with part of the loom at great expense. Of course the system activates only when earthed so isolating these wires doesn't result in the dashboard light illuminating and have no repercussions in terms of trouble codes or for MOT so I just secure any loose wires and forget about the system altogether.