$100 is a very bargain price point for good front/rear lights. You want a light which gets you noticed (front and back) and one which you can see with (front).
For the rear, the Planet Bike Superflash is my personal favourite 'bang for the buck' light. You can get one for $20 - $25 and they're worth every cent.
For the front, many people are touting the benefits of the MagicShine flashlight. I've never used one, but plenty of people seem to like them.
That MiNewt/Superflash combo for $130 on Amazon (from your link) is a pretty good deal, IMO.
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"I feel like my world was classier before I found cyclocross."
- Mandi M.