I think the best bit of advice would be to try them both first if you can ?
Both are great cars, parts supply really isnt a problem with either tbh and they are both very strong cars, but they do drive differently - the Durango is lightning quick but slightly 'edgy' to my mind and can catch you out if your not concentrating 100%, i feel the TRF511 is easier to drive quickly and consistently, at least in my average hands.
Try before you buy
