Get it, you have a 5% chance to get RROD but you shouldnt worry about it, and even if it does you can send it in within 3 years of purchase(warranty covers it and there is no charge to send it in).
that xbox has the new "jasper" motherboard
which is the best
the first 360s had a different motherboard which caused RROD 54% of the time
Be quick, those are flying of the shelves really quick for the hollidays so I would grab it ASAP