What was the broken bike?
I broke the rear axle on my old MTB trying to drag my 19 stone up a short sharp hill out of the saddle in way too high a gear - I guess too much torque, thankfully i was only doing about 5mph at the time. That said my hybrid has taken an insane amount of punishement in that department and been absolutely fine.
Id probably be looking for a decent 700c hybrid in a sale, which would compliment a future purchase of a road bike and will do the job fine until you save for a nice road bike, if thats what you were after.
Maybe something like
http://www.evanscycles.com/products/trek/71-fx-2011-hybrid-bike-ec025531#features