Agreed on Comstar = bad. I had one I had to return immediately as it was DOA and the replacement lasted less than a year.
I currently have a Western Digital 500GB that is doing well after what must be 2 years and there is a Seagate here at work that gets lugged around by multiple people and generally treated very baddly but yet still survives. I forget the exact model but I have a lot of respect for that one.