tig welders

[thwang]

hi all
im thinking of buying a small tig welder for a project i,ve wanted to do for a few years now to build my own mountain bike frame i could do it at work but with mitering the tubes trial fitting it would take to long and proably get in the way of things so i,ve been looking at a couple on ebay price wise is an issue £200 max what do think of these
http://cgi.ebay.co.uk/NEW-Dc-Inverte...54414697496834

or
http://cgi.ebay.co.uk/TIG-WELDER-MMA...63625735069598

the max tube thickness would be 1.2mm down to 0.9mm
simon