narva are good value for money but are somewhat lower scale, they are prone to vibration issues which means you need to adjust them more often and premature bulb failure.
lightforce are also good but a bit dear for what you get, they are very plastic, use special bulbs not readily available everywhere, and are easily removed / stolen.
from the limited exposure i've had to ipf i can say they seem quite good but don't pay too much for them, their body design does seem quite primitive, but if it works why change it?
two more to consider are britax & cibie. britax again are lower scale but excellent value for money. cibie are camparitive to ipf, older design, brilliant light, last forever, known to be quite expensive though as you are paying for the name.
i've said it before and i'll say it again, you will not do better than hella!
i've been, selling, installing, using aftermarket driving lights for 15 years and my experience has led me to this conclusion, if you want a light you are not going to be dis-satisfied with and don't mind spending a few bucks on, buy hella! to be more specific, rallye 4000 with hid kit, turn em on and wait for the sun to blow up, we don't need it anymore!