UKPassats

I'm looking to buy a couple of new door actuators to replace the non working ones on my B5.5 Passat. I'm after driver's side and rear passenger side ones and have been looking at what ebay has to offer but i'm not sure which ones to buy? I've done a bit of reseach and some people say the ebay ones don't communicate properly with the car and won't turn the interior lights on etc?

Can anyone reccommend which ones to go for or where to get the best ones from? Obviously genuine VW would be best but my wallet won't stretch that far