We've been using an MSR Dragonfly for a number of years. Took it on our year-long trip through Europe so it got used lots!
It is a really noisy unit, akin to a jet plane taking off, so don't expect to quietly make a cup of coffee in the morning to surprise your tentmate. Overall the unit was quite reliable just needing a fuel line filter replaced after using some bad gas in Tunisia. The biggest advantage of the Dragonfly is that it simmers very well but still boils water quite quickly.
What I really like though is the MSR customer service. A while ago I broke the tip of my walking stick and didn't bother with it. Then the summer before last the cup of the Dragonfly broke loose from its mount. I contacted MSR and told them of the two problems and they said to ship both items to them for repair. After waiting a few weeks I was about to send an e-mail asking for the status of the repair when a parcel arrived. The Dragonfly had a whole new burner assembly and the stick a new and updated tip. And the best part? Free!
By the way, we got my folks to send a new fuel line filter from MEC in Calgary to us in Morocco. While it arrived just fine (along with a couple of other items from home) the duties were astronomical; double the value of the goods! So, lesson learned, take a spare filter.
Sorry, I have no experience with the other stove. I hope you enjoy your cross-Canada trip this summer!
'03 R1150GS Adventure
'84 R100RT 141,000 km (Dad's!)
'89 R100GS 250,000 km (and ready for another continent)
'07 R1200GS Adventure 100,000 km (just finished Circumnavigating Asia)