I am using two Echo PAS-265 multi tools and am happy with them.
I am using AmSoil and E3 spark plugs and so far, so good. I clean the exhaust port once in a great while (every 18 months or so) and run a 1:80 mix.
You will find many people telling you to stay away from this or that brand but if you look through the posts on this website, you will find that Echo is a good brand to rely on.
Do a search on my posts, I think I talked about my PAS-265 a few times already.
2008 Bad Boy Lightning 52" 26HP Kawasaki LC with mulch kit and foot assist
2008 Quick 36 Dually Samurai with Step-Saver
Honda 21" HRX217
Echo PAS-265 Power-heads with Trimmer, Edger, Hedge Clipper, ProSweep and Power Pruner attachments
Shindaiwa EB-802RT, Echo PB-755T & PB-265L Backpack Blowers
Various backup equipment (Poulan Pro, Toro, Troy Bilt, etc...)
Professional pressure washing equipment.
Amsoil synthetic oil and E3 spark plugs for all engines...