Wipertech are not bad - but basically copies of the Bosch versions (aero blade with spring steel encased in rubber 'air foils' as you described) .
Tried a set and they didn't last as long as the genuine.
If your housings are OK you can replace the rubber wiper insert.
Volkswagen sell the OE replacement rubbers as a spare part.
The rubbers come with a plastic end clip for the wiper arm.
Remove end clip remove old rubber, cut new rubber slide in and attach plastic clip.
Cheaper than replacing the whole assembly - I paid $14 ea from Camberwell Volkswagen
Part # 1K0955429
With buying from FCP...
For some reason, I though LHD vehicles have different wiper blade part numbers...
- can anyone confirm LHD wiper blade assemblies fit RHD cars?