Future Impact and C4. Yes there’s a bit of a learning curve to adapt your playing to the pedal’s monophonic pitch detection but honestly, there’s nothing really out there that comes close.
Both around £180-200 used.
plenty of FI and C4 clips on my soundcloud page:
https://on.soundcloud.com/ogy92kYkKVPDhq7v5
https://on.soundcloud.com/oGRfSqdPcTi9LFrh7