Space, the next frontier

I don't have a lack of space. I have a desire to remain married. ;) To that end I have been going vertical, shelving, the last frontier. I have about 10 of the typical plastic 6 foot shelf units, and I am currently eyeballing the mother of all shelves, the Gorilla Rack (a serious steel structure not ten cents different from the stuff Home Depot uses themselves, just shorter topping out at 8 feet). Here is a mini review and request for comments and suggestions. No Name Kmart brand Yuck, with very little weight this shelf unit is in serious trouble. Partially my fault, never, never, never, sit one of these on something else so that the four corner sections with the posts are not firmly supported. I sat mine on a huge tack box I deemed too large to move. The sag is so bad it looks like its melting. Contico Still yuck, but looks ok with "light" usage. Mine was fairly happy until I put a box of transformers on a upper shelf, then it got "weak" in the knees, but didn't fall over (yet). Zag The current top of the line at the CostCo reject discount store I frequent. At about $17 a pop its hard to complain, but I don't really care for the two adjustable shelves (since the reject store often has lost the locking rings). Rubbermaid King of the shelves, I just wish I could find more at a decent price. Sturdiest of the lot, I have one stacked high high high with a monitor on the top and all sorts of other junk with no wobbles. Shelves have a ridge around the outside to keep stuff from rolling off, there is a nice little "dish" in the front to put screws etc. in, and two handle grabber things on each side to hold a broom and or golf club. Generic Metal These have each corner made out of a metal V, and the shelves etc. all fasten to that via bolts. Stronger than it looks, and the mainstay of most serious shelf efforts. Gorilla Racks The same basic design used in commercial warehouse shelving, except in "lighter" 14 guage steel. A 6' x 6' x 1.5' unit with 3 shelves is $99 at Home Depot and requires two people to load the box (two big ones I bet). My neighbor went serious bananas on this, and bought several of the 6' tall and one double 8' (shelves share a common center support section). I want some of these pretty badly, but my lust for toys is at war with my cheapskate nature. Tomorrow is the show down. All of these, with the exception of the generic metal unit with all the nuts and bolts, take just a few minutes to put together, with a rubber mallet the only required assembly/disassembly tool required.