It really depends on a lot of personal factors, which only you can decide.
What kind of work are you going to do with it? DIYer around the house, or commercial work use?
Which kind of handle do you prefer? Round (S-K, Bonney), ergo (Matco, Wright), or square (old Craftsman)?
Do you like full polish or knurled handle style?
Do you need fine tooth action (which usually means a round head) or will a slightly rougher action suffice (pear heads, open heads)?
Do you need quick release or not?
I personally like the S-K roundheads the best overall. Round, knurled handle, 45 tooth fairly fine action, round head (fairly compact). Old Thorsens 77 series roundheads were tough, too.
6xxx Indestro pearheads were nice, and the older Craftsman LLTD (pear head) and RHFT (round head) were solid users.