The pedal sounds great and authentic, is simple to use with modern features (true bypass, 9V center negative power), is sturdy and well built in an awesome vintage looking metal enclosure, and won't break the bank.
It has the exact Octavia sound I had in my head from many famous recordings. Lowering the amount of boost or rolling back the volume on the guitar cleans up the sound nicely and accentuates the octave more. It's a one-trick poney, so 3 stars for the features (some other Octavia pedals offer the option to remove the octave from the circuit for example). But otherwise 5 stars for all other categories and a definitive recommendation!