I'm a bit late to the thread.
I have no idea what your requirements for screwdrivers are. I think only you know for sure. But nothing has to be written in stone. Whatever you have now will probably suit you fine, and if you wear them out or break them then you can either buy the same, buy cheaper, or buy more expensive. Everybody makes their own choices. And if you screw up and strip a few heads, hey, good excuse to buy yourself a screw-out set.
I personally have all sorts of screwdrivers. Got them expensive ones, and those freebie ones. I've got lots of bits from top tier names to no name bulk china makes. Also got my share of socket bits.
I find that I tend to use bits when either using an cordless impact driver, or when traveling with a purpose with a bit holder and few bits. When space is tight or when you need a little more torque, the socket drivers on a stubby ratchet are nice. when there's a recessed hole, bit drivers sometimes don't fit and I need a actual screwdriver.
I've gradually moved from cheap to more expensive. I find that cheap bits have variable QC. Some of them last 100 screws in hardwood. Other, don't make it through a single screw. So for example ... maybe in a pack of 10 ... 2 don't work at all, 4 last for 5 screws, 4 last for 20 screws, and 2 last for a 100 screws. Whereas in a more well respected brand, in a pack of 10, they all last around 80-120 screws except for one golden bit which somehow seems to last forever. (of note, I haven't really ever counted the number of screws until a bit has worn out for me. I'm simply completely guessing)
As for actual screwdrivers, my mind tells me that I should buy the best that give me an easy warranty that includes wear. That should mean craftsman pro for me. Except that I already have 4 P2 craftsman regulars around - and when one of them starts to wear/cam out, I put it aside for exchange. Rotating 4 around, i might wear out 1.5 a year. my nicest set is the Vessel Megadora 900 series, which I try to reserve for JIS screws.