My old gasser didn't fit my chosen cooking style (not that I'm any good at it) so I finally stopped studying the available units and bought one. It's a Broilmaster H3.
My 23.5" W x 16.0" Little Griddle GQ-230 fits as though it was made for it.
I'll probably only use it for vegetables, as a griddle and in the summer as an oven. My PG-500 pellet grill/smoker will still be used for most grilling.
Edit: Spelling (dang!)