Of those I suspect only the Mossberg Maverick is available in Canada. I've not seen the Dickinson or Silver Eagle which are both Turkish and likely built in the same factory.
I've considered the Maverick for bear use but wonder about reliability. Maybe not the be all end all but I am a belt and suspenders kinda guy so double action bars sound good to me which I understand the maverick does not have. Maybe no big deal and I have not shot one so no first hand experience. The prices are attractive though and for a knock around gun as long as it is reliable there is not much more to ask of it.
The jury is still out. However, I find I am becoming jaded towards the new Remingtons. Go figure. I think Mossberg 500/590 or ? is rising up my list. Actually the Mossberg 535 3 barrel combo is quite high on my list and thats why I asked about 3 1/2" chambers and slugs thinking 2 3/4" or 3" hulls in 3 1/2" chambers. They are a nice combo and good price... and available in Canada!
Longbow