So my old rear ARB was corroded to a point where it was recommended that I replace it. Decided (based on the various posts on here and other forums) to upgrade to the 22mm RS4 ARB (over the standard 16mm one).
What can I say? The difference is incredible - it's so much flatter through corners and body roll has been reduced noticeably.
I can't recommend it enough.
To note - I'm also currently running standard suspension (due to upgrade in the next month or so to better springs & shocks).
Parts fitted were:
2 x A8AO 511 439 Clip @ £3.14 ea + VAT
1 x A8EO 511 409 AL Stabilizer Bar @ £75.92 + VAT
2 x A8EO 511 327 D Y34 Mounting Bush @ £2.96 + VAT
4 x AN 101 277 07 Z21 Bolt Hex @ £0.84 ea + VAT
Had this fitted by the ever brilliant Dave @ VolksAutos in Sutton.