The setup that I'd be tempted with is this one:
http://www.photodeals.co.uk/product....7&cat=5&page=1
or this one:
http://www.photodeals.co.uk/product....6&cat=5&page=1
Made by Bowens, but without the Bowens badge or price tag.
The Elinchrome looks a good cost compromise with one 400W head and a second head at 200W for filling in, but I'd say go for one brolly and one softbox to give you some flexibility on the lighting effects.
Having recently used a cheap Interfit setup I'd definitely say "avoid". Very unreliable triggering on radio, IR or even on a PC socket synch cable. Was very disappointed by how poor it was. As we were shooting medium format film on the day, it would have been very expensive if we didn't have access to D&P facilities on the same day.
Duncan