So a nice Imp/Mod would cover rabbits, squirrel, pheasent and grouse at most upland ranges?
Ok so I think I have it narrowed down to a 20 gauge SxS with 26" barrels, dual triggers and Imp/Mod chokes. Now to just find the gun!!!
Sounds like you've got it narrowed down nicely.

There's a couple more recommendations I'd add to your wish list; straight (English) stock and removable chokes. The straight stock makes sliding from the front trigger to the rear trigger easier. This is just me, but I find a straight stock helps me keep my elbow up which, in turn, promotes smooth swinging (especially since birds don't necessarily fly on a nice flat plane parallel to the horizon).
I know you spec'd removable chokes earlier in the thread, but I thought it important to include them still, in your wish list. While Imp/Mod is good for early season and thick brush, it will likely be too open for late season, cut line, or edge of bush hunting. More importantly, you'll need a full selection of chokes to cover the whole gamut of upland game that you mentioned.
Be sure to follow (I believe it was Grouser's IIRC) advice to make sure the gun fits you, including the forend. You may find that you prefer a splinter, a semi, or a beavertail. For me, it's splinter all the way, but tastes differ.
You've got plenty of time before the season opens (for birds, at least). Take your time and enjoy the search. If this is a major purchase for you that is expected to fill your upland needs for years to come, I'd suggest you borrow as many 20 ga SXS's as you can get your hands on. Nothing you read or handle in a store will help you find what's right for you as fast as shooting with actual examples and/or a trip to the patterning board.
If you live in the Edmonton area (sorry I didn't notice your location before starting to write), I can help you with a half a dozen examples to try.
BTW, welcome to the world of upland hunting with side-by-sides - you're gonna love it!!
