1) Well, I guess it depends on your definition of 'sharp decrease'. I think here the answer is "if you have to ask ..."
I don't have definitive numbers, but the reason why I think that even if they did fall sharply in price with in the next few months it won't be enough for you is because I've been asking myself the exact same questions for the past 2 months or more. I'm in desperate need of some more HDD space for my Media Center, but god I'd love an SSD. I just don't think prices on SSD's are going to fall enough for me to warrant buying one. They would literally have to drop to
almost half, say around two thirds what they cost now before I could genuinely persuade SHMBO* why I
NEED one. And she just bought me a Cooler Master Cosmos S (without me asking or even mentioning I'd like one), and paid extra so I could get it from a store that day (rather than cheaper online) as an early Xmas present, so it's not like she's difficult in that respect, quite the opposite infact
. Bottom line, I think that like me, you won't see an SSD price attractive enough for you in the next 6 months. Does that help any?
2) Tough question this one. Undoubtedly, there are more horror stories about large capacity drives than there are lower capacity drives, but I think that's more to do with them being newer technology. Older and/or lower capacity drives have been built and refined for a while and there are simply fewer failures. So it would seem that I'm saying that larger drives fail more often, but that's not what I'm trying to say
Larger drives very rarely fail, just that lower capacity drives fail even less .... rarely ... is that a word? I'm thinking price point per gigabyte is a larger issue; I'd personally aim for the 1TB drives as they are quite nicely priced for the amount of room you get. 1.5TB and the new 2TB drives just cost too much for my liking. Also, check the manufacturers sites. Off the top of my head, if you buy a retail drive, Seagate offer a 5yr warranty? Might be WD ...
*She Who Must Be Obeyed