What Stihl should I get?

Hey, y'all. So I'm looking to buy a Stihl chainsaw. I have 8 acres of land and lots of trees that need cut up (and plenty more dead ones because of the Ash borer pandemic that needs to come down). I live next to a reputable dealer who have fixed my Stihl weedeater, they were extremely knowledgeable and worked fast. I had a Husqvarna for a long time but had lots of issues with it and no close dealers (I bought at Lowes and they weren't helpful at all whenever I had an issue).

Based on my needs, is there a certain model that I should look at? Thank you for any responses!