Hi, i'm currently running JOM's Blueline set up on my A4 b6 1.8T Quattro as they were cheap & due to a sheared rear spring and leaking shocks they needed replacing quick (but sooner than i was hoping).
Anyway, I wasn't planning on keeping them too long mainly because i thought they were TOO cheap if you know what i mean? and wanted to keep upgrades to quality, proven parts.
But, i'm still running them now after 8 months with no problems.
The ride height CAN go ridiculously low (up to 100mm with no issues on the rear!). The shocks are pretty firm so you can feel the bumps more (speed bumps should be taken with caution), but cornering has improved significantly compared to my SE set up which at best was like a boat. The one thing i would say is that the springs seem quite soft so expect a bit of bouncing still on dips etc, but again an improvement on the SE.
My wheels are the 18" S-line 5 spokes & I have the height set so if you put a ruler on top of the tyre (sticking out of the arch) the arch will sit exactly on top of the ruler. This is my best description as i didn't measure exactly!! But it does ensure all 4 corners are the same height i guess!
I'd stick some pics up but unfortunately the old girl got in a fight with a deer so she's on the mend at the moment (new bonnet, upper/lower bumper, grilles, light and wing). Yep, the deer kicked her ***!
Hope this helps, feel free to ask any Q's.