Hi Brian,
My family and I have been making and smoking our own sausage (primarily Venison based) for about 10 years now. We make Ring Sausage, Summer Sausage, Pepper Stix, Muscle Jerky, and just this year we experimented with making ground Venison Bacon (see post in the Bacon section). The Venison Bacon turned out "alright", but I doubt that we will do it again.
We have our own ring sausage recipe that basically consists of TenderQuick, Pepper, and Garlic. But our pepper stix and summer sausage mixes are all made by Excaliber.
Before you smoke any sausage, I would "strongly" encourage you to get a James Jerky Dryer. These Smokin-It units are so air-tight (usually a good thing for butts/Brisket/Ribs/etc.) and the sausage is so moist that the moisture is not able to get out of the smoker and you it ends up steaming the sausage instead of smoking it. The Jerky Dryer helps suck the moisture out of the smoker.
I haven't got my Jerky Dryer yet, but I will not be trying anymore sausage until I get one. They are back-ordered right now, but Steve says that he has some more coming in.
I am glad to see another sausage maker joining the forum!
Tony, I get all of my Excalibur sausage mixes directly from my local butcher, but I have also bought some other Excalibur seasoning from Waltons. I did a quick look on their website and found a ton of mixes that specifically stated that they do not contain any MSG. I haven't tried all of these, but here are just a few of the many that my search turned up:
Snack Stix -
http://www.waltonsinc.com/p-2375-willies-snack-stick.aspx
My favorite rub -
http://www.waltonsinc.com/p-3518-smokehouse-bbq-no-msg-163-lb.aspx
Ring Bolgna -
http://www.waltonsinc.com/p-2344-ring-bologna-unit-no-msg.aspx
Polish Sausage -
http://www.waltonsinc.com/p-2338-polish-sausage-no-msg.aspx
BBQ Pepper Stix -
http://www.waltonsinc.com/p-2381-bbq-smoked-stick.aspx
Smoked Bratwurst -
http://www.waltonsinc.com/p-2314-blue-ribbon-bratwurst-no-msg-seasoning.aspx
There are many more, but these are a few that caught my eye. I have tried both of the snack stix mixes and they are both very good. The BBQ one is actually fairly sweet, but we liked it.