Advice from a newbie
I recommend reading the wealth of kiln and kiln accessory information at Dogwood Ceramics: http://www.dogwoodceramics.com/product/paragon/paragon-information.htm I recently purchased my first kiln, a Paragon Fusion 7, and found their information to be thorough and immensely helpful.
After much research, I opted for the mercury relay http://www.dogwoodceramics.com/product/paragon/support/mercury-displacement-relays.htm but decided to pass on the viewing window becuase it can negatively affect efficiency. I will not do raking, so I also passed on the lid safety switch. Including the 13″ round shelf kit, the kiln cost around $900.
It is smaller than I would like–can’t slump large wine bottles or make large trays, but I could not afford to jump up to the next size. At some point, I will trade up, but this is a great starter kiln, capable of far more than jewelry and trinkets.
Hope that’s helpful!