I've put some in, now. Seem quite good, but as I didn't have a chance to compare side by side, I cannot say just how much better they are.
No cutting or modification required, I just had to adjust the aim as the left one was pointing way up. I guess the original wasn't right, as when I swapped the Britex L to R, there was no change. So adjust it I did, and now they are great!
Repco Penrith quoted me ~$65 ea for the 72002's, TJM in Parramatta sold me the Britex at $80ea. (After I went to pick them up, I saw they had them marked there at $75ea, but couldn't be buggered haggling over it. Too used to CJD stealerships, I guess!