I don't think they are as good as people here say. Their jaws can be on the soft side and the handles aren't awesome. I've had some out-of-the-box quality problems with some of mine.
Chrome finished models are for work in corrosive environments, like electrians who work outside for example. Otherwise, get the cheaper black oxide.
The comfort handles are nice, but the lump near the joint isn't as ergonomic as one might want. The vinyl grips are smaller, so less comfortable and a bit slippery. Almost cheap.
I know I'll get flak for this but it's honestly how I feel: Snap On make better pliers. I own both and comparable models of both. At this point, I think I would only recommend Knipex Cobra (I have the comfort grip and like them) and the Pliers Wrench (also comfort grip). Both are beautifully designed, but for the price, they have a bit of play and are a bit lower quality than I would expect for the cash they cost me. I bought a pretty big set of Knipex pliers based on glowing recommendations here. I've since learned to trust little that I read on GJ. It gives me no pleasure to say that.
The old model Snap on 47ACP standard black slip joint pliers are probably my favorite pliers. They have a nice pointy nose, grippy handles, and great jaws. They are very well made- maybe the best of their type. I don't like the size and shape of the new talon version quite as much. The talon needle nose, and dikes are very very nice. They just came out with new dikes that are on special where I live, again with differentially heat treated jaws. I also have the SO duckbills and like them far more than my Knipex duck bills.
Cobras are probably must have pliers. In general, think Knipex are decent compared to channel locks, Klein, and my old Craftsman pro. Come to think of it, I think I may have preferred my craftman pros. Especially the duck bills. Teh grips were textured like my Snap Ons.
MAC pliers look very much like Snap On. I have no experience with them, but if they are readily available they might be worth a try.
Last, I would take the advice you get here (including mine) with a big grain of salt. Buy your pliers one at a time and be prepared to return them if you don't like them.