Can I just say with most of the lager kits, it is probably not a good idea to replace any sugar called for with malt extract. . . . I know this seems counter intuitive (i.e you add malt extract to make a better beer), but I have found that this always tends to make the lager more ale like. . . . This is where beer enhancer comes into play as it is only 75% fermentable, so gives body without contributing to the flavour.
Also no lager kit is going to benefit from being fermented with the supplied ale yeast, always substitute it with S23 or S-189 or my favourite W34/70 which are all available from Barley Bottom, and ferment cool at 14C
I found the Muntons Continental pilsner to be very good (fermented cool with a lager yeast) and the Brupak Beers of the World lager kits are very good