Tell me about your favorite riveters.

I have a 74 argosy 22' and a 69 Safari 23' I would like to do it right and purchase a quality rivet gun. Please tell me your experiences with yours. What you liked and what you didn't, was it hard on your hands or easy to use, heavy or light etc....I'm one of those gals that would like to do it right the first time and purchase one or two tools that will work well for the whole trailer not have eight half a** tools kicking around instead. Is there such a tool out there that you have found and liked that I would be able to purchase off the shelf somewhere and not have to pay duty and shipping to Canada?

Thank you everyone for sharing your knowledge base, you are all awesome!