I haven't sold you one of mine, so I know you don't have them all, Uncle Buck.
The Crittr-Call is a fine call but I don't think it's quite as great as you make it out to be. In many cases, neophyte callers have a tough time mastering the Crittr because, simply put, it's an open reed call, and like all OR call, it is harder to control. In the right hands, such as those with Quinton Wagoner on the other end, they sound incredible. But he puts in a little bit more practice time than the average recreational caller. As Leonard Bosinski inferred "elsewhere", there is very little difference between the CC and any other call when used by an experienced caller. Proper application and set up have more to do with stand success than what whistle you blow.
When I started making my calls, I identified one weakness of the CC common to many other calls as well as something in need of correction. That "something" is loss of tone at low volumes and low pitch. I wanted a call that can produce acceptable tone as soft as a "mew" as well as if I'm blowing my lungs thru the thing. The CC just doesn't offer this, nor do a lot of other calls, OR or CR. Mine do, as do a very few others.
You asked for my favorite calls - my "go to's". For closed reeds, the PREDATR PC-3 or the Sly Dog L-45 with double-reed voice (TNT's are moving up my list pretty well, too); for OR calls, the Sceery AP-6 and 3, or the CC's (I have the peewee and the standard. My magnum is still beneath a tree in rural Russell County, Kansas.) I personally love the ELK Inc. Power Howler, especially the Higgins variant, for a close range howler. If I'm reaching out, I use my own CC Standard attached to a cowhorn. For coaxing, I use a K-Kall Kisser button. I have about forty-something other calls, and all of them call coyotes. But the above list is what hangs around my neck on any given day.