It says the bargain is no longer available!
I seem to recall Angie blogging about this - perhaps try a site search? To my recollection, I think she advised to choose white jeans that fit a little looser and more forgiving; so I suspect your instinct to go with bootcuts instead of straight legs is a wise idea.
Have you tried the COH Amber jeans yet? After much trying on of various other brands in white, I ended duplicating my COH Ambers in white. They are bootcuts. I do not remember if I sized up; they are in storage so I couldn't tell you. Although I only got to wear them a few times last year, I love them and plan to wear them more frequently this year!
Another brand you might like is Ralph Lauren. I had a favorite pair of RL white jeans, that I found at TJ Maxx (or is it Marshall's? one of those!). But then I lost weight and sized myself out of that brand. I still hold on to them in case I regain. They have stretch, so they are uber-comfy, but not too stretchy - don't bag out like Soho's tend to do. Nice material; launder well. They were bootcuts, very classic, but fairly slim-fitting. And, they are higher-rise, for those who like high rise!