The Weber Performer is top notch. I have a 22.5" OTG and I LOVE it! If you want the extra space get the 26.5". I can't imagine you not being happy about that. However, you could get the 22.5" OTG and get a little bit cheaper gasser and have it all.
COS, 22.5" OTG, Primo XL, mini WSM, STICK BURNER