Based on a lifetime of gardening, my suggestion would be to find one with a soild tire rather than an inflatable one and with a heavy plastic bed rather than a metal one. Otherwise the only issue is size :-) As a single woman of advancing age, I prefer a smaller one over a larger When filled with soil or mulch, they are a heck of a lot heavier than you expect!

Definitely go for the plastic and a solid tire is a good idea also, I've never looked for that and had multiple hollow tires get poked and deflate. Around here all it takes is one unnoticed exposure to Himalayan blackberry.

They probably never have the solid tires and I actually haven't noticed any wheelbarrows there so far this year but otherwise I would look for one at Cost Co.

Wheelbarrows are subjective to the owner. I like a light deep plastic one and my hubby prefers the metal ones with the ballon tires. Try different models out in the store.

Why plastic, because of the weight? I have a metal one that is almost 30 years old. I’ve mixed yards of concrete and mortar in it, hauled rocks, dirt and mulch in it. It’s banged up but shows no sign that it’s ready to die. I doubt a plastic bed could have taken that abuse. I did replace the inflatable tire with a solid one. It is less cushioned, you feel the bumps more, but the inflatable seemed to go flat all the time.

Because the metal beds rust. Even contractor grade wheelbarrows are available with plastic beds so they do hold up.

IIRC, you are located in a much drier part of the country than I but here a metal bedded barrow lasts maybe 5 years unless one has room for storage out of the weather, which I don't :-)

Metal ones are heavy.

Most will state a weight limit.

I prefer two wheels rather than one. That way the load doesn’t need to be as carefully balanced. With a single tire wheel barrow I find that if it is heavier on one side it is more likely to tip if I turn a corner or hit an off center bump.

http://wlmd.com/miller.html

I can't handle a single-tire wheelbarrow unless it is practically empty. Too much strength and effort is required simply to balance the load.

OK, I'll bite. Where Is the best place to buy a one or two solid wheeled, heavy plastic wheelbarrow?

If you're going to mix concrete, haul bricks and rocks and stuff like that, you'll definitely want a metal wheelbarrow. When a previous one finally gave out I got a nice plastic one. but it did not work well to mix or haul concrete in, as the whole bed and handles would wallow precariously under the weight. You could easily lose the load. I've hauled a lot of pavers, too and a metal one almost barely holds up to that. Plastic wouldn't have a chance. A plastic one would be great for hauling plant debris and light loads, though. Also, I'd recommend getting a 6 c.f. one if you're doing concrete. Anything smaller is not enough room for mixing. If you have a Tractor Supply, they are a pretty good place to buy a wheelbarrow from. I would also recommend staying away from the professional contractor grade wheelbarrow if weight is a concern. They're sturdy but for everyday use most are just too heavy. Because of heavy loads, I prefer the pneumatic tire, but then I have an air compressor on standby.