what are you towing the trailer with? I have a 6x10. It is alittle tight with 2 bikes a 7 would be better, but i feel like the 6 is really wide already when you are looking in the rear-view. Either way i have a really old 'haulmark'. I shopped around before buying mine used. I saw 'Contintntal Cargo' and those were nice. If you buy new, you really cant go wrong. Dont forget the roof vents, side door, interior lights, interior wall hooks, and removable chocks (sp?) These items are invaluable. I also heard that the v-nose gets better mileage (makes sense). white or silver would probably be better in the summer, but black looks really cool. While you're at it get the side mounted canopy. just my 2 pennies