Jonsreds have some great models, as do their near twin Husqvarnae.
Jonsred 2171 is a 70cc, and is a real pleasure to use, great antivibe, very nimble, will keep up with a Stihl 440 and 460 in the right hands.
A 2153 is a 50cc saw, and is also fun to use, but wood over 18" dia will get tiresome to cut, timewise.
Echo, well, they make great lawncare equipment.
Many folks here will agree that a 30cc range, a 50cc range and a 70+ cc range saw makes for a great 3saw plan, and you already have a 'tweener with that Poulon . BUT, and this is from personal experience, a Dolmar 5100 will cut near 2:1 to that Poulon, and be ALOT more comfortable in the hands to use. A Dolmar 7900 is just downright fun to use, run out of wood before you are done having fun cutting.
The fact that your local Stihl dealer is 30 min away shouldn't play too much, buy the saw, take proper care of it, and you won't see that dealer again for a long time. Haven't seen mine for three years, get my chains, files from small business that's local, and fluids from the farm store.
Best thing to do is go to dealers, and cut some wood right there with the saws to get a feel for what is right for you, and your dollar.
Learn to file sharpen your own chains by hand, its a very useful skill.