$180 Tera Echo is a shimmery reverb/echo/arpeggiation effect that would do well in shoegaze and ambient stuff.
$160 Multi Overtone sounds like their take on a Micro POG with modulation.
$130 Adaptive Distortion is a bit more boring, but still pretty cool since it changes the gain and EQ according to what you're playing.
Here's what Boss says about each pedal:
[youtube][/youtube]DA-2: Adaptive Distortion
Perfect Distortion Tones in Every Register
Powered by Multi-Dimensional Processing technology (MDP), the DA-2 Adaptive Distortion delivers ideal distortion tones wherever you play on the guitar neck.
- Next-generation BOSS compact pedal with innovative Multi-Dimensional Processing, realized with proprietary technology and custom DSP
Distortion that adapts to create the ideal sound in every register
Ultra-responsive to volume changes and playing dynamics
High-clarity sound, even when playing two or more notes at the same time
Very low noise, even with high-gain settings
Intuitive operation similar to standard distortion pedals
[youtube][/youtube]TE-2: Tera Echo
Make Your Playing Soar with Majestic Ambience
Powered by Multi-Dimensional Processing technology (MDP), the TE-2 Tera Echo produces a dynamic new stereo ambience effect that goes far beyond traditional delay and reverb.
- Next-generation BOSS compact pedal with innovative Multi-Dimensional Processing, realized with proprietary technology and custom DSP
Rich, spacious echo and ambience effects
Dramatically enhances the direct tone, but never overwhelms it
Freeze function holds the ambient sound for lead backing and sound effects
Ultra-responsive to volume changes and playing dynamics
Wide range of sound adjustment with simple controls
Mono/stereo input and output
[youtube][/youtube]MO-2: Multi Overtone
Expressive Compact with Distinctive, All-New Tones
Powered by Multi-Dimensional Processing technology (MDP), the MO-2 Multi Overtone uses your guitar’s harmonic characteristics to create a wide range of extraordinary new sounds.
- Next-generation BOSS compact pedal with innovative Multi-Dimensional Processing, realized with proprietary technology and custom DSP
Impressive, harmonically rich sounds that compliment and enhance your straight guitar sound
Works well with both clean and distorted guitar tones, and also bass guitar
Ultra-responsive to volume changes and playing dynamics
Three different sound modes; wide range of tonal adjustment with simple controls
Mono or stereo output