I would go with the HIDs, I did in my car and have liked the brighter light. as for blinding other drivers, I have watched as others drive my car, not an issue but I did leave the reflector cap in so that there is no direct light.
it will depend on your car where or not it blinds others but for $50 I would check it out. if they do blind others you could go with projectors but they will run you $200+.
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