I use different brands for different types of equipment.
I use echo for larger CC trimmers and edgers. I have had good luck with the 280 engine. I also have a few their hedge trimmers.
I use shindawia for smaller trimmers and edgers. The 232 is light and powerful. I also have shindawia 802 backpacks but I am thinking about switching to Redmax because they are more powerful.
Then I have jonsered chain saws.
I also have some random other brands thrown into the mix but those are my most common.