R and C or Daxter?

So I'm looking to get a Christmas gift for my brother. He's trying to get into platforming games, so I immediately thought of Rachet & Clank and Daxter. My question is essentially which is better, but I'd also like to know:

1) Which is easier for someone new to platforming?
2) Which is longer?
3) Is R&C worth like $20 more than Daxter (in Canadian prices, R&C is $50 and Daxter is $30)
4) If I could find them both used, would it be worth it to buy both? Or are they too similar?

Thanks in advance, everyone!

Daxter is actually pretty good. I never really considered buying it, however it came with the silver psp and im glad it came with it. R&C sounds like a good game though, i hear my co-workers talking about it all the time.

1) Daxter is more straight ahead platforming and has simpler controls
2) Daxter is longer
3) Daxter is worth more
4) Both are good and worth playing, Daxter is far superior imo