I love my Greenhouse.  This is the first one I ever owned.  I did a lot of research and the Quictent greenhouse had a lot of good comments online.  
The last few years my garden has been like a science experiment.  I have tried raised beds and gardening in pots but the deer and other wildlife were coming over and having a buffet when I wasn't looking.  The greenhouse has completely solved my problem and I have the biggest vegetables ever. Actually I planted way to much and way to close together because my plants don't normally get very big.  Next year I know how to space things out better.  I'm actually going to get a 2nd Quictent soon so I can grow even more. 
I totally love it.  Great quality, easy to assemble, very durable even when we have has terrible storms and wind.