Hi the tandem pump on my tdi90 is leaking slightly. After a close look at it and reading various posts on here it seems that it is a fairly straightforward job to replace it. However I've noticed a few members suggesting that the Bosch pump is better than the currently fitted Luk pump. The Bosch pump is also cheaper. Can anyone tell me why the Bosch pump is better, or conversely persuade me that it is wiser to replace like for like.