Wow! Thanks for the opinions guys. I have to be honest, it didn't make things any easier. hah Like some mentioned, I think the most effective approach may simply be to select one with the expectation of purchasing the other later (for me it would probably be at least six months since I have a new rifle and a couple shotgun's I want to pick up).
I think I mentioned earlier, I have fired the m&p9. Have not even handled a glock though. In fact I dont think there are even any stores in London, ON that have glocks in stock or on display. Berretta's, S&W's, Sig's yes but not Glocks. Really don't feel like driving to Kitchener or Cambridge just to handle one on display though.
Let me ask this then. How many people find the .22 'conversion' kits to actually be worth the price for their intended use? I mean, we all know .22 ammo is ridiculously less expensive then 9 or 40 (or 45!!), but as far as firing .22 from the same frame as say 9mm or .40, do you think its worth it, or better simply buying a different gun? The intention has been to get as proficient as possible with one make while reducing costs as much as possible. .22 is so much cheaper to shoot but does not help with sight recovery given the recoil.
I'm almost thinking of just buying a .22 conversion for one my sigs since I already have half the investment and then just buying the glock or m&p as a 40 and purchase a conversion barrel and some mags.
Decisions, decisions.... :-(