It really just depends on the skill of the cocksucker. Some guys give great head, some don't. For me personally, I think see-throat is overrated, mostly because the majority of guys who try to deepthroat get really toothy towards the bottom. That's painful and no fun. Also, the penis is more sensitive towards the top, so no need to go down that far, although there have been a rare few who can swallow the whole thing with no teeth interference, and that is pretty spectacular.
For me, the best thing about a blowjob is just watching how much the cocksucker enjoys it. They are in cock heaven when they're getting to lick and throat an 8.5" cock. I know I am when I get to suck one that big! I don't like to receive blowjobs for long though because I like to focus more on kissing, body contact, and fucking.