Found these at my neighborhood Food4Less store (in Pasadena CA) and had to try them. I've found it difficult to roast and peel those satisfactorily; these are done perfectly, have excellent flavor, and are dead easy to use - you can thaw them in the fridge, under running water, or just put them frozen into dishes and start cooking. My store has 16-oz bags for $2.28 each; they're the La Huerta brand from Aguascalientes, MX. Given the price of fresh poblanos (for some reason they're sold as "pasillas") and the time and energy needed to roast, peel and seed them, that's a fair bargain in my books.
I've used them in several different dishes so far, all good, including in some hash browns I just had for breakfast. Next project is going to be that good old '70s potluck standby, the Chile Relleno Casserole, for a dinner on Friday. Report to follow!