first of all, get one made of metal/aluminum to dissipate heat and it should have a powered fan, as opposed to one made entirely of plastic and/or without a fan. it should also include an eSATA bracket you can stick in an unused PCI slot on your computer, making your cable question irrelevant.
(links go to Newegg.com)
Take a look at this one $30
. Questionable eSATA compatibility issues (read 1-star reviews, they are spooky). If you're strapped for cash, feel like gambling on eSATA, and don't want to spend an extra $10, this is for you.
Here's a great one for $40
(includes eSATA bracket, like the other one, but a better quality enclosure). I'd spend the extra $10 and get this one.
My only concern with both of those is compatibility with a 1.5TB drive. Some of the reviews claim it is OK. Still something to consider... maybe someone else has some experience. It's possible the homepage for both enclosures has updated their compability and newegg is lagging behind, or the max-size compatibilities are just irrelevant, since they work with all modern drives.
For IDE, I love the AMS enclosures, but I don't have much direct experience with the eSATA/USB2.0 enclosures.