I'm glad I got the ccombo I did. I got the memory foam 12 inch green tea mattress and the 18 inch premium smartbase deluxe platform bed/mattress foundation, both queen size.  I was sooo hesitant to purchase a mattress online, not being able to feel it first.  I did a ton of research, reading reviews and watching videos about various "matress in a box" mattresses.  The base: Easy to put together seems sturdy.  Amazing amount of storage.  The mattress:  Feels pretty plush, if you like a firm feel you may want to go with a thinner version.  I've been sleeping so much better than on my old squeeky standard mattress.  The only trouble I had was gettting the mattress before the base so I stupidly opened mattress (which inflated to it's size within an hour) and it was a pain to get onto the base, but that was my bad.  I'm 5'2 so it is a little too high for me, but I wanted that extra storage.  It's been a few weeks and I really do love it.