Don't buy by brand. All the major manufacturers that produce pro level saws make great saws. Instead of looking at the color or name tag, first determine what cc class you need, then compare models within those classes and see which one seems to be rated as among the best. A good place to go is arboristsite.com and read their chainsaw forums. It's easy to weed out the obvious brand guys and they are there in droves. SawTroll is a good guy to read as is nmurph. nmurph is a guy named Neil Murphy. I bought my modded & ported 346XP from him for half of what a new one costs and mine is the 50cc NE not the older 46cc OE (you need to know the difference).
My favorite saws are the 346XP, 372XP, and 395Xp but my Dolamar P5100S is a screamer and it's still stock. In between the 5100/346 and the 372 is the 60cc class which is a hle in my arsenal (don't have a 60ish cc), and Stihl was making the best in that class with the MS361 until they inexplicably stopped making it in lieu of its weak replacement (reportedly) the 362. I was intending to get a 361 and dragged my feet too long and now have to try and find one on the used market if I ever want one, but it's highly unlikely you or me will ever find one at least for a decent price.
In the 50cc class I also own a Dolmar P5100S as stated and I use it just almost as much as the 346XP. Dolmar is a German company which is owned by Makita. Dolmar makes saws for both companies. Most of the parts are interchangeable for the comparable models. The Dolmar 7900 has a cult following but it's probably more saw than you need.
Jonsered (part of the Husqvarna AB Group), Echo, Stihl, Husqvarna, Makita/Dolmar, Shindaiwa, Solo, they all make great saws it's just that some models are better than others in certain classes. Echo makes some great climbing saws but their larger saws cannot compete with the performance of some of the other Stihls/Huskies/Dolmar/J'reds.
The biggest mistake you can make is reading and being influenced by someone who says something like "Man I bought a Husqvarna 455 Rancher and that thing was a POS! I threw it away and bought a Stihl MS 460 Magnum and man there's NO comparison!".
Heck no there's no comparison. The 455 Rancher is a homeowner saw not a pro level like the 460 Mag and the 460 has over 20 more cc's. So reviews like that are not reviews they are moronic statements.
Now I have not answered your question yet I know, because I cannot. I won't presume to tell you what brand and model to buy, you have to decide that and you need to be patient while you eductae yourself. I tried to give you some basic info on how to avoid the "brand trap" and also the very important aspect of comparing a homeowner saw to a pro saw. Also to be considered is parts availability. Dolmar is a little hard but if you can do most of your own work as can I then just get the parts online and do the work yourself. If you cannot, buy a Stihl or Husky, and if you are buying based solely on parts and service Stihl would be the clear choice, you only need to decide which model is right for you. But Husky has a dealer network almost as prolific so parts are readily available.
I'll see if Murph will come over here and give us a few more pointers. The saw he built for me is a fine saw and my new favorite for limbing. Maybe he has something that will fit your needs if so I bet you'll like the price compared to a new stock saw. I even buck with it when my arthritis makes the 372 too much of a chore and it does okay even though not really made for that role.
Keep asking questions as you look for a saw and maybe we can help you narrow them down. P.S. If you do register as arboristsite it's best to read a while before posting. Asking "Which is better Stihl or Husky" will get you flamed and rightfully so.