all of those frames have vertical drop outs. Although not ideal for ss applications, it can be done by using a chain tensioner, eccentric hub, or a magic gear.


These frames might be better:
http://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1277
http://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1084

Do you know exactly what you'd like to do? Unless you have a lot of parts sitting around building up from the frame will be more expensive. You may want to look into complete bikes if "affordable" is one of your goals.