I must contest the "time-speeding-up" thing. Logically, we perceive time as moving more quickly because our brains, as they age and gradually die, are processing information at a slower rate. If we are magically preserved in our prime, as the poll suggests, that degradation would be halted. Therefore, our perception of time would not speed up.
As for the memory thing, aren't there techniques for improving memory recollection and, for all intents and purposes, storage? Certainly these would only carry you so far, but eventually, as others have suggested, you would be able to augment your normal capacity, eliminating that particular problem.
Yeah, I'd take immortality. I'm more interested in what the future holds. Absolutely no investment in the present.