The contractor's 4-ton — power, reach and a proper cab.
The KX040-5 reaches about 11'2" deep, which is enough for full basement digs, deeper foundations, and most shoreline and drainage work.
At 4 tons it has the power and reach to handle basements and shoreline jobs that smaller machines can't, while still being manageable to trailer and run day-to-day. It covers the range of jobs I see most often across Grey-Bruce, which is why it's the size I end up recommending most.
Conventional tail swing — the counterweight extends slightly past the tracks when rotating, so normal working clearance is needed around the machine. For jobs tight against structures at this weight class, the tight-tail U48 is the alternative to look at.
At around 9,180 lb, the KX040-5 needs a properly rated tandem-axle equipment trailer and a heavier-duty tow vehicle. I'd walk through the exact trailer and hitch rating against your truck before you buy.
A cab is available and common at this size, especially for contractors running the machine through Grey-Bruce winters or putting long hours on it. Canopy is still an option if you want to keep upfront cost down.
Tell me about your property and the work you need done — I'll point you to the right machine, even if it isn't this one.
Tell me what you're working with