Stihl 261-cm vs Echo cs-590

Hi, it's time to upgrade from my second-hand Poulan P3816. We have ten acres of mostly oak, hickory, and cedar. Half of it is pretty heavily wooded, which I intend to thin out. Most of what I'll be felling will be <18" diameter. Maybe a couple a bit larger. The rest of the property is all larger, mature trees subject to storm cleanup. I don't use my saw daily or even monthly, but when I do use it, I use it hard.

I am looking at Stihl's MS 261-CM as a solid all-purpose saw and also Echo's CS-590 for its affordability.

I guess my question is, is the Stihl worth the extra money? All my other power equipment is Stihl, and I've been happy. Thanks!