I'd still go for the as and when needed specific screws as apposed to the multi packs - screw technology is great (not so much the self piloting nonsense) . the thought of buying more or specialist while having unused packs seems defeating
I'd rather have redundancy in supply stock at home than buy product, then have to spend half a day sourcing as few as 2x screws to replace those cheese ones supplied with it.
I have to do a fair bit of this kind of thing but I can't carry lots of different types and sizes. I've come down to a few sizes that cover a lot of situations. I get Hospa screws from Hafele but they're available all over.
I'd still go for the as and when needed specific screws as apposed to the multi packs - screw technology is great (not so much the self piloting nonsense) . the thought of buying more or specialist while having unused packs seems defeating