Series 3 replacement drive choices (250GB-2TB)

I need to replace a drive in my (lieftime) Series 3 (OLED). I have a WinMFS image I have used in the past & works great so I am now looking to get it a new hard drive (& then put the image on it). Are these pretty much the best ones to go with:

250GB
http://www.amazon.com/gp/product/B00...A2U4STSOCX8D3T

500GB
http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

1TB
http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

2TB
http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER


Also, I actually have a spare TiVO HD (TCD652160, not lifetimed) that isn't being used. Can I possibly use this same S3 (OLED) image on the 160GB hard drive? Or does the replacement drive HAVE to be at least 250GB for a Series 3 (OLED)? I thought I remember reading something about this here a while back, but maybe not.

I realize its a lot smaller in terms of capacity, but this Series 3 (OLED) in question is basically being used as a cable box in a lightly used basement rec area and not much is recorded to it anyway. Therefore, maybe I can just recycle the old Series 3 HD (TCD652160) drive instead. Just curious.