It depends on your weight, there are certain running shoes with
increased shock absorption, stability and cushioning. The 'Koji'
model from the Asics Gel range of running shoe is one such trainer.
Spend some time researching the manufacturers websites, or even
e-mail the staff asking for their advice. Running shoes do vary,
some are designed for road running, others for cross country running,
and some try to cover both like the Nike Air Pegasus shoes. If you
really are serious about finding the right running shoe then research
'pronation'. This will categorise the way you run and give a further
insight into the best shoe for you.