I have the 193T I use quite a bit, & while the 193T I have is great now, I prefer others. a 200T/201T or similar.... if that's a potential consideration, is a much better saw for hardwood.
The 193 of mine had a few teething issues, since resolved...
Mine Needed a timing advance to idle right, otherwise it had a habit of dying on trigger release between cuts, or if shifted from one side to the next. this is not an excuse to mod a saw, it literally didn't function properly stock.
It's not super powerful either, but with a muffler mod & timing advance 193T holds it's own with the displacement class it's in... I used a 150T recently in a tree as a loaner & it was very light, reasonably responsive & cut fine.
Out of the two, I prefer the 193 in hardwood as it has a distinct power advantage over the 150T, while not being much heavier.
The 3/8" chain I find easier to sharpen & longer lasting between sharpenings, and 3/8" is easier to find priced reasonably as well.