I am not familiar with those brands, but I would look for an Ingersoll Rand cut off wheel.
Buy once, cry once but the tool will last 20+ years, I have one and it is at least 35 years old and still works great.
I have a couple IR tools and they are great. I haven't found an extended reach model by them though. And from the reviews, I think I want to splurge on the reversible ones.
Added some links to the original post.