I hate to say anything about the Dolmar because I have not ran any of the late model saws - if other folks say they are good then I believe them. My vote however would be to go with the Stihl, and get the M-tronic as well. It has been stated to have the upgraded air filter system similar to the MS261, and the M-tronic is a joy to use since the saw is always in the best tune possible. Keep in mind though that I have not run a 362 - I had its predecessor the 361 and I really liked that saw, but moved it on down the road on a trade for a 441 M-tronic ported by Mastermind. Since there are alot of Stihl dealers local, find one you like and trust and see if he will match the one that gave you the best price. The Stihl will most likely hold its value better in the event you ever decide to move it down the road for whatever reason.
Good luck with your decision - I'm sure you will be happy with whatever choice you make. You stated in your OP that the Dolmar seemed to be less quality and you were very impressed with the build of the Stihl. Your initial perceptions may change, but if they don't you may always wish you had gone with the Stihl. $150 is alot of money I know, but over the lifetime of a saw it's not much. I like the old saying to buy once, cry once............
Waylan