I answered #2 I prefer aftermarket but hand reg sometimes.
My thoughts about hand-reg is that this only occurs when you search for a domain and find it has not been registered, and you register it. I would not call DropCatching handreg. You are paying more than regfee to drop-catch a domain. But if you are calling waiting for a domain to drop, and then hand-regging it, I would call those hand regs because you are only paying regfee.
I think the majority of my bidding on expiring auctions, like at GoDaddy/DropCatch, are not hand-regs. I'm not often paying full reseller prices on the open market either. But I do pick up some bargains, sometimes. I probably never buy any domains at full retail pricing either. But I have done that on occasions, if the domain has been for my use.
Sometimes, I might get inspired by a domain, and see if I can reg a similar domain. Which I will usually hand-reg. But it's not something I do on a regular or repeating basis.
IMHO. Aftermarket domains, although more expensive than hand regs, do have some pluses over hand-reg. Because at least somebody else has seen something of value in the domain, other than me. But both can go wrong or right. But I do feel some validation, if the domain is already registered over unregistered.