Ahhhh, getting the wife in the mix! :greenchainsaw:
Again, I'm far from the expert, other than a few years ago scratching my head over similar options as you.
Unless going for two saws for the price of one pro saw [BTW, can't remember, but do you still have your old saw to cut your primary saw out of a pinch situation .... don't ask how I know about the necessity...
], I don't see the purpose of the 270 or 280 in a two saw line-up - the weight is just too close to the 290 [not sure how the 310 & 390 compare in price or durability, but same weight there, I know I liked the 361 over the 390, don't recall the 310 at the time]; I'd suspect if your wife could handle any of the mid-range saws, she could handle the 361 - perhaps even better.
Going with One-Old-Banjo [which actually mirrors nmurph too regarding 260/361] that leaves the 192T/290 combo; however, as you were looking at pro saws [and now knowing your wife is part of the equation] that goes back to my premium twist on it: the 200 [T, if you think your wife would be comfortable with it] and the 361 - ideally with a couple bar options, but I'm being a hypocrite there.
You might get heck of a deal buying two pro saws at the same time; don't know unless you ask. If you're looking at mixing brands, I've read Stihl guys even admit Husky's equivalant [can't remember number] of the 200 is vicious.
Finally, while I like that 361, if your wood isn't that big, note that the 260 fits in every combination 1,2, or 3 saw; while the 361 could get pinched in the middle - on the other hand if you want to make your next saw smaller instead of larger: 361.
Myabe your wife wants easy start? I think the 192 offers it in either straight or T; or could do a 250C-BE. Tuned up decent my wife has no trouble with the 200, but won't touch the 361 even with the decompression.
yet?! :greenchainsaw: