Here is a quick phaser review that I extracted from another thread. Please add on by type!
MXR Script 45 - great watery effect but clips with duals and drops lows and low mids
Phase 90 - great but too extreme for my tastes and again clips and drops lows and low mids
Retro-Sonic Phaser - similar to a P90 but with greater headroom and less of a tone change and slight volume drop.
Small Stone Nano - best headroom, slight volume drop, less extreme than P90 similar tone changes and didn't stack well
Nebula - Similar to a P45 but less subtle and clips easily
Maxon PH350 - absolutely awesome. Huge headroom, stacks nicely with other pedals, can get sounds from P45 to P90 to P100. Almost no tonal changes and an ever so slight bump in volume which is almost needed to keep your spot in the mix and cannot be determined in a band setting.
MXR Script 45 - great watery effect but clips with duals and drops lows and low mids
Phase 90 - great but too extreme for my tastes and again clips and drops lows and low mids
Retro-Sonic Phaser - similar to a P90 but with greater headroom and less of a tone change and slight volume drop.
Small Stone Nano - best headroom, slight volume drop, less extreme than P90 similar tone changes and didn't stack well
Nebula - Similar to a P45 but less subtle and clips easily
Maxon PH350 - absolutely awesome. Huge headroom, stacks nicely with other pedals, can get sounds from P45 to P90 to P100. Almost no tonal changes and an ever so slight bump in volume which is almost needed to keep your spot in the mix and cannot be determined in a band setting.