I enjoy boeing products, and have nearly all of the modern 700 series aircraft, from the 727 till the 777 (one variant of each), and dont think there needs to be another boeing product, itd be nice to see something like a tupelev or the saab, just something that isnt normally done, there are millions of boeing products out there. That being said, if it must be boeing, do a 777 or 787, simply because there arent very many payware, or even freeware options for either.