I mentioned the Ikea Lack but if you dig into the specs it is only rated for 44 lbs. LOL as I have 9 tuners on mine and I would guess they weigh a combined 70-80 lbs.
If i were shopping for a rack today I would have the Monolith 4 tier heavy duty unit very high on my list. It weighs 85 lbs and is rated for 350 lbs! Plus that espresso unit on Amazon is now down to $150. The epitome of C&C, eh?