Sure, they're ECHOs - they'll probably run great for you if you take care of them. I don't think you'll find anything with the power you're looking for at HD though. I believe 22.8cc is the limit at HD. I'm pretty sure only your dealer will carry the 28cc big-boys. We're RedMax all the way ourselves, but we do use the ECHO 280 with a few attachments from time to time - good power, durable.