ComStar comes across as pretty cheap. I've never had one fail on me, but it wouldn't surprise me. I believe mine came with a Samsung drive inside, but I swapped it for a WD after the enclosure fell off a table while the drive was running and killed it altogether.
A while back Future Shop had a 500 GB LaCie drive on sale for $100, which is a much better deal on a much better brand. These days they're usually on for $120 I think, $140 or something for 1 TB. Keep your eyes open, they have pretty good sales from time to time. The ComStars are always on sale, which may tell you something.
To the other posters: remember we're talking Canadian dollars here.
Ah, clicked that second link you provided. That's a pretty decent price, but wait until it's on sale and you'll save another $10-$20.