A 4 wheel wagon is nice for moving gear, but when conquering a small set of stairs, a two wheel hand truck is better. These carts look pretty cool for hauling gear transforming from a basic Hand Truck, to V Dolly, to 4 Wheel Cart. The V-Cart version holds up to 500lbs, and the Solo Lite rated at 250 lbs. The Gruv Gear carts roll on flat free tires. I think i'm fond of the Orange/Black color scheme because it's similar to the SF Giants. Not priced for the average hobbyist, as the Solo Lite starts at $179 and the larger V-Cart at $249. Find them below.
Gruv Gear Transforming Equipment Carts V-Cart Solo Lite
This is so random, but might also be useful. For people with kids, how often have you looked at that BOB Jogging Stroller and thought 'This would be ideal to carry some gear'. Of course no matter how well you dress it up, there's no hiding the fact that it's still a baby stroller.
I was shopping for another cart that can carry a decent amount of weight and include some nice size tires to tackle a variety of terrain. This Kill Shot Deer cart looked pretty interesting (and not so much stroller-like) as it's rated to pull 500lbs over terrain and still folds down a bit. But to make it work for my gear, I think I might need to add another set of caster wheels to the front. There's some additional dimensions following the link below. So random, ok back to work.
Rough Terrain Deer Came Folding Cart