I own 2 power compact fixtures (24" 1x65 and 48" 4x65) and they work great for me. There are some things to consider though.
1. Reflectors are not the best quality.
2. Lunar lights are useless
3. Flip top legs don't half work
4. Usually come with poor spectrum bulbs
5. Bulb brackets are not top quality
6. No seperate power cords to regulate lighting
All in all you don't what you pay for and even a bit more. For "price per watt" they are great.