Thanks again for help.

I have adjusted my criteria a bit. Let's leave out offroad and concentrate on a fast 20'' road folder. I have selected 3 models, which I like and are available for about the same price. I would be really glad if you could leave your comments on thease models and suggest, which one to pick.

1) Trek F400, 2006 Edition.

http://www.trekbikes.com/us/en/bikes/2006/archive/f400

Has SRAM dual drive rear derailleur. I have no experience with that so have no clue how good it is. How is it positioned in SRAM hierarchy? I like the frame, which seems more sturdy than average folders.

2)Perfect-bikes SPORT XT folder. It is a small german company, making custom bikes. The link is in german, but you can see the pic and by clicking on SPORT XT also the specs.

http://www.perfect-bikes.de/index.ph...b2beb47462f014

It has very good gears- Shimano Deore XT, which make them a favourite in my list. Yet, as the company is small I cannot find any reviews and should probably order on the internet.

3)Dahon MU P24

http://www.dahon.com/intl/mup24.htm

Is it really a 24-speed folder? Cannot find any info on the front derailleur. I am also not so sure about its quality, when compared with the first two.