I have those with the CCFL and HIDs 4300K bulbs. they can be adjusted up and down and side to side. you just need to be gentile with them. I even took a little preempted stick on them and used some plastic jb weld around the bolt holes to firm them up.
As for the bounce, there are a lot of cheap and easy ways to fix them, i fixed mine with some double sided tape and spray paint can lids.
Most people that break them try to fix the bounce by over tightening the bolts, that does nothing to help. i keep mine at finger tight plus a 1/4 turn with a wrench. works fine.
also the CCFL halos are super bright, they can been seen in the direct sun light. I have had mine now for over two years, same ebay HID kit same head lights and halos, no issues, it all about prep work and getting the correct power harness for the HID blasts.
here is a daytime pic of just the halos