No offence thedon, but if you’re going to post on a public forum asking for a review on what is fundamentally an incorrect purchase in the first place, then expect people to pipe up. It’s not being smug, it’s not being superior, it helps the buying decisions of others who read it and may help you as well.
Just because someone hasn’t used a piece of equipment doesn’t mean they can’t offer an opinion. I also don’t own a bosu ball, Shakeweights or PowerPlate….
As to space; I’m not sure there are any exercises that require one to swing a 7 foot barbell around a room. The footprint of the lever gym is 2.56m x 1.42m. I would contend that a rack takes up less space. Especially if you match it with a 6 foot power rack bar.
Dumbbells do indeed use stabilisation muscles but are useless for a squat or deadlift and once you get up to bodyweight+ for your presses they aren’t a great option there either. Also if you’re such a big fan of dumbbells then why the levers? Or for the cost saving, just get some as well?
A link to a discussion on a more specialist forum that backs this up