I bought this one:
From Northern Tool. It's $30. Yes, it's cheap.
http://www.northerntool.com/shop/tools/product_200377813_200377813
The build quality? It's so-so. I did a lot of research before buying a hand truck. I looked at stuff from $19.99 to over $500. 4 wheels, stair climbing tracks, pneumatic versus hard rubber wheels, straps, no straps, convertible, etc etc etc.
In the end I really sat down and THOUGHT about what I needed out of my hand truck. For me, it was occasional moving around the shop/garage, and probably for light duty furniture moving too. I am by no means a professional mover, and I do NOT plan on moving any cabs up or down stairs without help. I also have a home with entrances on the main AND basement levels (sloped property), so stairs aren't really ever an issue.
As far as straps go, if I really feel the need to strap a cab to the hand truck, I'll get a ratchet strap and strap it on. In most cases, if you practice a good center of gravity, you can maneuver a cab just fine without straps. If you're feeling like you can only move it with straps, then you shouldn't be trying to move it alone anyway -- get help.
As far as tires go, there's tons of folks that say hard rubber is the way to go, but I disagree; I tend to find myself going across many different surfaces with cabs: gravel driveway, concrete, hard floors, carpet, turf, dirt, sand, etc. There's no way that hard rubber would roll across those surfaces. Sure there's issues with air pressure and bouncing, but again, if you're moving a cab so big/heavy so quickly that you're going to bounce it around, you're in the same situation as illustrated above: get help.
Quality wise, I figured it was a smarter investment for me to buy into something less expensive up front. If I find that I'm replacing 2 or 3 times, I'm still out less than $100. Plus by that point, you've moved enough cabs that the investment in something more robust will be worth the investment.
I also based my observations on my buddy's dolly over the past 4 years. He's had virtually the same one as I bought, except his has small hard rubber wheels. It's held up just fine through about 20 cabs or so. His only complaint? He wishes he'd gotten pneumatic wheels.
As far as that bent handle goes, RedWolfJC, I'd say pulling on the handle versus tipping the cab will bend even some of the best made dollys out there. They're not made to tip the cab for you -- they're made to assist in transporting it once it's already tipped.