I have the 1200 4 Stroke and the whole sled weighs in at about 500lbs. I've had a couple of stucks where I had to use my best curse words, but it's usually if I slide off into a ditch or miss a corner, this machine was built for the trails but don't let the weight be a concern. As mentioned above, lots of torque, quiet, nice tone from the exhaust, oil change once a year and no plugs to foul.
Coincidentally, one of my few rides last year due to the low snow was with a friend on a 600 etec. We typically topped off the tanks at the same stations and the fuel consumption was very close to the same, the etec did a bit better as the 1200 will get around 15 miles to the gallon. The 1200 has the mechanical reverse, the etec is electronic.
I think you'd be happy with either one, maybe the pricing and availability will help you decide.
Gary