Upgrading Halogen to Halo Headlights
 

Hello! So I'd like to upgrade to an entire Halo-shaped HID headlight. The shop I'll get it done at said if I buy the entire assembly myself online anywhere, they'll put them in for me for $100 (they're trustworthy).

Any recommendations on brands? My car is an '06 Mazda3 i. I'd prefer not to get upwards of $500 if there are trustworthy brands that price. Any help is appreciated, thanks!