Eventide PitchFactor Harmonizer Pitch+Delay Pedal Use for dives and pitch-shifting.
Eventide TimeFactor Twin Delay Pedal Includes 10 Eventide library delays. Yes, there is a typo in Amazon's title as of this post.
Eventide ModFactor Modulation Pedal Phaser, Flanger, Chorus, Polymod, TremoloPan, Undulator, Vibrato, Q-Wah, ModFilter and RingMod. YMWV on these.
Eventide Space Reverb Pedal Some lovely reverbs. If you only have one pedal, this is the one to get. Eventide sells a software implementation, "Blackhole."
Eventide H9 Harmonizer Pedal This is the most recent iPad-friendly pedal. It incorporates features from the other individual units.