For a different perspective, most full time pro climbers use 200t's, even the ones that only run husky for every other saw in their lineup. There's a reason for that. Those climbers who use lesser saws think that the 0.5 second difference (or whatever) in a cut is not a big deal. On the ground it's not a big deal. I'm a semi die hard stihl fan, but on the ground I could really care less. I've got a couple 346xp's in my lineup and so long as I'm sharpening the chain and tuning the saw I don't mind if it's a 372 or 440 (love those 441cm's though!) a 395 or a 660, and would definitely favor a 3120 over an 880.
Up in the tree it's a different story though. A climbing saw is your bread and butter if you're a climber, that saw makes you money. And over the course of the life of that saw, that one saw might make you $100k as a contract climber, or even more money if you own the business and are climbing. That's a whole lot of money. Those branches aren't just gone to hang around and wait for you to do your thing, for better or worse we have gravity. Fractions of a second really do make a difference up in the air, and a whole lot of difference to the time it takes to get a job done. If you've got a saw that really drives the chain, you can drop branches confidently in the attitude you want them in. It's a very spontaneous thing, and there's no second try. A good fast saw with an aggressive chain means you can spear cuts down. Or fold them and pop them off at exactly the right attitude to control the bounce when they hit the ground. You can fold them ust how you want them, and release them at that split second in time when they will come down just right and cause no damage.
Being able to do that saves a whole bunch of time. I can cut and drop 10-15 branches in the time it takes to rope 1. That might translate to 2 or 3 trees done in a day vs 1. If you're a basic climber with easy trees and just need to get the wood on the ground and haven't even gotten around to doing trick cuts, then there's a whole bunch of climbing saws out there that will fill your needs. Or rear handled saws. Or hand saws, or whatever. If you're a gun climber who needs to git 'er done every day of the week then who gives a **** about the price? We used to pay $1500 a pop for 200T's in aus, and worth every penny (though of course I was buying mine stateside) but if someone came out with a more powerful climbing saw that hit the sweet spot I'd fork out $2k+ in the blink of an eye and do the same again a couple times a year. That saw makes money like no other saw can.
Shaun