Lettuce

My bibb lettuce is currently producing nicely - we pick a handful of leaves every day or so for salads or sandwiches. The container has about 5-6 plants which produce continually as long as I keep things cut. I planted these back in March and they've been producing for the past few weeks.

While the flavor is nice, I can't say that I'm crazy about the texture. I'd like a lettuce that stands-up a little more, something with a little more body, something not so namby-pamby. It just seems rather flat and flimsy sometimes. Any recommendations for next year?

Here are a few pictures: