We're preparing to bring home our puppy next month and I'm looking for a freestanding gate to fairly wide doorway. I'm worried about getting one that he won't be able to knock over if he jumps or even just runs into it while chasing a toy. I see a range of prices (this one for example seems affordable -- but would it be sturdy enough? or is its price tag an indication that it wouldn't hold up against a rambunctious pup?) Advice on a good sturdy one?