If you go for AVO's, it's worth double-checking the required maximum and minimum extension lengths. AVO do three length ranges as standard, but when we measured my car up, we found none of the stock ranges were right - the shock would have bottomed or topped out.
Fortunately AVO were able to make me a set with the necessary range, and at no extra cost too, which is good. Prior to the AVOs I had Spax, and I think the AVO shocks are a great improvement.