I wouldn't recommend gaz after buying mine.
The rear ones can be a pain to fit and then rub on the arch as the blue boot is so big.
Mine seem to be leaking, at only about 4k miles and about 2-3 years old.
The finish on them doesn't stay looking nice for very long, they just end up going rusty looking.
And for British roads, the highest settings I use are only about 8 clicks, and that's pretty stiff. Most of the time I run 4-6 clicks now. So the other, what 30 odd clicks, are pretty pointless.
If I was to buy again, I'd go for something different, probably the KYBs, or maybe even GMax if I was on a tighter budget.