i would recommend these two:
http://www.velomarkt.ch/veloboerse.p...17&adid=104997 http://www.velomarkt.ch/veloboerse.p...17&adid=105448
if you want to make competitve training on the road , there are tyres with the diameter 26"x1"(around 150 grams per tyre), the lightest MTB tyre so far comes with a weight of 280 grams each .
I dont think you will find bikes like these in the price range at about 1000 sfr
Here is one for 1000 sfr(3 years old):
http://www.velomarkt.ch/veloboerse.p...24&adid=104713