For cars you need something that can grab big items:
Good: Channel locks
Better: KNIPEX Cobra
Best: KNIPEX Plier wrench plus one of the above.
Awesome: variety of sizes of each above.
Then you need something to grab and twist small items:
Good: Any pair of needle nose will do.
Better: KNIPEX or Klein are the good ones. I like the KNIPEX Assembly Pliers (28 21 200), which have long handles and strong jaws.
Best: Snap On 96CF (talon) is the luxury model, IMHO way better than any KNIPEX product.
Awesome: 1 above plus a good set of Duck Bills are the ultra luxury. (I loved my Craftsman pros but wore them out, I now have KNIPEX 28 01 200, but I'd like a set of Snap On 61ACP)
You need diagonal cutters:
Good: Old craftsman pro black handles (made in France?)
Better: Klein or KNIPEX 74 02 200 are comparable in my book (oft argued here).
Best: New Snap On differential heat treated models are comparable or better than Klein or KNIPEX. DOn't choose older models.
Better Still: 1 above plus KNIPEX mini bolt cutters.
I highly recommend electronic nippers:
Good: Xuron- made in USA, stamped metal, inexpensive but excellent.
Better: KNIPEX and Snap On make very high quality models I would consider luxury models.
Best: I think there are some other European models folks like here but I have no experience with. Maybe someone can remind me what they are called.
Slip joint pliers for general purpose work::
Good: Craftsman Pro, Channel Lock Code Blue
Better: Snap On 47CF Talon grip
Best: (in my opinion) Snap On's last model 47ACP. Gorgeous pointy nose, perfect joint, nice length.
Long needle nose for reaching into tight areas:
Good: HF set of bent and straight. I had a set I bought from HF many moons ago. They are rusty now and the jaws are a bit screwed up, but they did well enough for me all these years. Not a place to beak the bank in my opinion.
Better: Blue Point (or equivalent) would be the mid price quality choice.
Best: Snap On (or equivalent) would be luxury models.
To this basic set, I would add:
1) vise grips (you may benefit from the needle nose models)
2) cir-clip pliers. I used a craftsman set (or Lisle?) with interchangeable tips for many years. I now have KNIPEX which are MUCH better.
3) Hemostats- Blue point sell them with rubber coated handles, but my flea market specials are just as good. Get a variety of lengths and straight and bent models. I also have surgical tweezers with bent serrated tips, which while not technically pliers, live in my plier drawer and really help.