353
I do not know if you are a STIHL only saw guy. If not I would recommend a Husqvarna 353 over the STIHL 026. Husqvarna has AIR Injection which keeps your air filter super clean. 026 are notorious for the air filter getting choked up quickly. I would have to clean mine sometimes twice a day, real pain.
The 353 rips with a 18" bar and can handle a 20" if needed.