The biggest seller for the top handle is the safe and easy one hand use. I can grab and toss with one hand and cut with the other without any issues and the saw balances well and couldn't possibly cut yourself as compared to 2 handed saws. Also the top handle version is significantly smaller in size allowing it to be carried many differetn ways, I have packed it in a backpack, strapped it to bikes as well as it fits in more places than the longer two handed versionsmy current saw is an older ms290 with a 20" bar. covers a pretty decent range of stuff. eventually i want to get a smaller electric small for limbing and small jobs. @gonefirefightin i won't be doing any climbing, any reason to consider the top handle model (MSA 161) over the traditional 2 handed (ie MSA 160 / 200)?
As far as the pants go I would suspect they will be fine either way as long as they arent chaps. I just like the stihls because they are a lot more cooler in the summer months and are bit more thinner than the alternatives from what I have seen with others wearing the cheaper versions.