I know this isn't really style or beauty but I'm feeling a bit daunted. I wear trainers for pootling around at weekends, and for riding my bike to work (changing when I get there), so not for any serious sporting activity. My last pair came from Moshulu and have fallen apart after two years of wear. Where can I get some comfortable alternatives that won't cost the earth? I also want to be able to go to a shop and try them on - I'm in West London.