I've got this one, and love it: Travelpro Flight Crew 4 22" Rollaboard - TravelPro - Brands

Little over your $125 budget, but it's worth it. You can spend an extra $10 to qualify for free shipping, or if you have access to a company store you've got a good chance. I really saw the quality in these as a ramp agent (lots of flight attendants used it) and used that as the basis for my choice. If it lasts a FA a few years with the heaviest use you can imagine, just imagine how long it would last you. Mine still looks brand new after a couple dozen uses (including some being checked/planeside checked)