The EMB 170/190 doors are a shocker. Virgin Blue is having a shocking run popping slides. Not just the cabin crew, but the engineers too!
Have worked on Fokker, Boeing, Airbus and Embraer.
Embraer: Has to be the worst designed door in history. An 'Arming Lever' and an 'Operating Handle' was not enough - no - they had to go throw in a third lever that although it looks and feels like its part of the door arming lever, splits in half to operate totally independently. All handles move in the same directions, and the arming/vent flap levers are hidden under the operating handle. The doors are tiny, but they still come with 'Door Assist'.
Airbus: Quite liked it. If you can switch on an oven, you can arm your door.
Boeing: 767 always reminded me of one of those finger traps you buy at the markets. Generally any design that requires you to stick both hands in a small space will involve some pain. The 737 - as much as I love the simplicity and the solid clunk when the door closes, bending down is so 1960s.
Fokker: Plastic arming handles felt flimsy, and if you ran a messy galley you'd have to look out for milk jiggers and teabags getting stuck in the girt bar tracks. No viewing window at R1 (some models did, ours didint), meant you had to run around the galley and into row one to check outside conditions... Pretty hard to pop the slide on the F100. It's a cross between boeing and airbus (rotating door handle, and chest height arming lever which was bright yellow and about 4x the size of the one on the A330)