3) Strymon Deco
Strymon have absolutely nailed the market for studio-quality ambient effects in a stompbox. They're huge in the Praise and Worship world, but the Strymon Deco had a very different target audience - so it's no wonder that a few people didn't really get it.
It's an all-in-one rockabilly machine; a time travel device that's stuck on the year 1954.
Allowing for anything from slap back echo, to tape style flange, to emulation of double stracking sounds, plug a hollow-body electric into this bad boy (Bigsby compulsary) and play some Buddy Holly or Carl Perkins to your heart's content.
Strymon have also done a good job of emulating tape saturation in the form of a pedal.