I have had the lights for over a year now and there are no problems, they work fine.
No, it does not look akward next to the fog lights, because the fogs are either projectors or non projectors and the headlights have a projector lens and the other one is a non projector lens, so it looks good either way (I have projector lens for my fogs)
And you do not have to change the rear lights because you do not see them at the same time.
I have aftermarket lights at the rear, and it does not really make a difference at the front, but if you want aftermarket lights at the rear, you can get then really cheap (around 100$)
I will send you a link to rear taillights if you are interested.