If you don't have a 360 yet, I would wait for the Jasper model. I suspect it will finally do the trick at bringing the 360 down to normal consumer electronics failure levels.

I have a launch 20 gig that's starting to go out. I will probably buy a 60 gig Jasper in the coming months.

Wait, how is the hardware quality of a new 20 GB?

Is this new hardware (Jasper) going to make a significant difference?

Are new Falcon models really that bad?

I thought they were quite improved...

I would go with the 20G so you can an extra $50 to get a extra controller or a game or even better Xbox Live for a year. Just my opinion. Good luck with your decision.

keep in mind the 20gb is a clearance and won't be around very long.

Soon it'll be no HDD, 60gb, and 120gb.

so, if your deciding between 20 or 60, you better hurry up.

 I think there is plenty of the 20GB until mid fall.  I personally don't think the 20GB 360 will sell out at a faster pace then usual.

Buy the 20GB model you can always get a 60GB or 120GB HDD later on down the track.