Knives are like everything else, very VERY subjective, what works for me may'nt work for you. IMO a drop point makes a good all round knife but it's not great at cutting the arse out but that might be me lacking technique. I've got a really nice stag handled Muela with a 4" blade and a Buffalo River drop point, which is great for skinning but far and away my favourite knife is this Finnish J Marttini with a trailing point, it's not flash but good steel that holds an edge and isn't a mare to sharpen, decent sized handle that fits my big hands and it does everything I need it to.....but the best thing about it is the history, passed from my G'ma to my Father to me, so when I'm hunting they're right there with me.
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Also, don't buy a knife just because it has a "gut hook" they are useless (ask me how I know) the knife might be great so buy it for that, not for the gut hook :thumbsup:
Sharpening wise, I use waterstones for my chisels and plane irons BUT often for my knives I'll use the lansky system, not because it's better, which it isn't but because it's easier and I can sharpen my knives whilst sitting in a comfy chair with a cuppa and some biccies :D