I've never owned one myself,but know some guys who had a Struck Magnatrac..one was a landscaper,his had the backhoe attachment..other guy was a tree surguen,he used his mostly to drag logs to the chipper..
From what I heard from both of them,they were very rugged machines,and powerful for their size..and they ain't light,the one with the backhoe weighed over 3000 lbs if I remeber correctly..
I always wondered how "good" they were too,as a kid I remember lusting for one every time I read the ad in a Mechanix Illustrated magazine!.(for a mini-doer,and the "Economy" tractor,"all gear drive,no belts to slip!" )...guess since they still are in bussiness to this day,they must be doing somethng right..
Doubt if I'll ever own one though--I saw a Magnatrack on "Craigslist" here a few weeks ago with a backhoe--asking price for a 6 year old "well used" macine,was 15,000 bucks or BO!..
I did see a similar unit last summer at a tractor pull called a "scat-track" ..no motor,left outside to weather for years--with a faded "for sale" sign oin it,with an asking price of 600 bucks or best offer!..too rough for me..