Quoted from Trekie:
66" Escalara with forklift lift attachment. Check the weight of they other brands to see if your stairs can handle the weight of pin + machine weight.
Can they others unload a pallet from a semi trailer or pickup? Can the others hold the pin up while you put the legs on ?
My wife says it's the best tool I ever bought. Purchased it over 15 years ago. Battery lasts about 3 years.
Pros: You don't die
I don't regret mine.
trekie Where do you buy your batteries?