In recent years I've had 3 TC's. AF 1140, 1150, and now an Eagle Cap. You just missed out, I sold my 2012 1150 for $29...
But-- Having owned 2 AFs and now an EC, Here's what I would say -
1140 - The "Storage monster". It had excellent storage inside and out. The storage room came of course in trade with floor space. Nice big storage outside for bbq, chairs, fold up table, etc. Floor width is limited to 5' due to being inside and under the bedrails of the truck.
1150 - MUCH less storage for outside stuff, but a more "open" feel to the inside. One drawback - can't get an 8 Cubic Ft fridge as an option. Floor width is limited to 5' due to being inside and under the bedrails of the truck.
My Current EC (See Sig) - Best of both worlds--floor is over the bedrails so it's 8' wide BEFORE the slides are pushed out, feels like a motorhome inside, and a massive basement storage. My only complaint - Happijacks. I hate 'em. The AF had Rieco's---excellent jacks. Weight rating is 25% less on these jacks, they're slow, and sound as if they're going to blow apart at any minute --- They're not, they just sound like it.
I've had my EC for all of six months, and then just this week I saw the new Host Mammoth.... I may be on the war path for my 4th TC in 3 years.
Overall quality of the AF's is great, make sure to stay on top of your caulking, but that's advice for any TC.