Just to conclude this thread (for me anyway).
In the end I went with the advice of Central VW (who did the job) and so far I am not disappointed.
They fitted Eibach springs with a 30mm drop front and rear (don't know where they got them, I did not see that version listed anywhere ?)
They fitted Sachs shocks & inserts, new top mounts, bump stops and ARB mountings.
Interesting that when I mentioned shorter shocks they were adamant that at this amount of drop, shorter shocks are not required. (and they have been doing Golf's and Rocco's etc for many years)
The car also now has 4 new P6000's, new discs, pads, drums, shoes, cylinders, fluid and h/brake cables.
Cost for all above (including £220 for tyres) = £900
Apparently I am to take it back in after around 500 miles to get the geometry checked as I am told it "settles" somewhat after bedding in.
Handling is greatly improved but hard to be subjective as the old set-up was tired, esp at the rear.
Gills 92 GTII seems to be pretty much the same height as mine, don't know what gear is on that car, looks original kit but might not be.
Mine seems stiffer than Gills (but not "bangy") but I wouldn't say it actually handles any better than Gills (which handles great) on our twisty country B roads.
btw, to those who said Wietec TX's are the way, I know you are right, but I simply could not justify the £650 plus fitting,
plus all the costs of the other work done (brakes, tyres etc as above).
It would have taken the money invested in this (new to me) car to over £2500

and it wouldn't then be over (is it ever ;) )
I am sure around a track the Wietec boys would have the edge but hey ho ;)
Anyway, ta for all the input folks and I am sure this thread will be of interest to future folks wishing to buy suspension
