There are lots of good brands, both consumer and prosumer you could use. Most 1TB 7200rpm FW800 drives will run you about $140-$250. If you're looking to stay around 100 I would say check out Lacie, Seagate or Western Digital (but at $100 you're likely to run into USB based drives). But if you're willing to spend a bit more, GRAID, Glyph. With HDV material you might also want to transcode your material down to avoid lag, especially if you're multi-clipping.
Are you working from a tapeless or tape source? The transcode comment was just about editing at a lower data rate (prores proxy, prores LT) so you don't hang your system and then upresing back to Prores 422 or Prores HQ. I've had some issues with HDV in the past that's all.