Okay, after doing a bit of research on the subject, I have come to the conclusion that you NEED to figure out what model you're going to get if you want to avoid any disappointment, though there shouldn't be room for much. I'd rule out the MacBook if you don't want it or are particularly worried about build quality.
If you're going to get the cheapest model available, I don't think it's worth it, but it's still an okay choice. If a RDE is a viable option for you, I'd opt for that instead.
EDIT : Forget it, saw your most recent post. Get it. I5 if you can, which should be a given.