I use it for 1 year. I have not tried other models. I relied on the technical characteristics (true bypass ...) and notices everywhere.
Well, this is stupid. It returns a signal IN, and depending on whether the pedal is engaged or not, the signal passes through the SEND. It is your pedal or other on RETURN. All the spring OUT.
Where it gets really interesting is that you can mix the two signals. A Wet / Dry bulk.
I use it with Morpheus Bomber (a kind of polyphonic whammy). The Lehle allows me to choose the volume of my guitar dry compared to the volume of my guitar pitchée.
Super convenient, too, and that gives it a versatility foolproof is send and return knobs. It regulates all volumes of all that comes and everything that comes out.
I have a simple and unique, but it can be used in so many different configs. It can be used for A / B box for several amps or more guitar or bass or keyboards ...
It is a transparency crazy. Apart from the color of the pedal plugged into the loop (not true bypass it ...), I am unable to say when it is switched on or not. This is the selling point, apart from flexibility. And it is justified.
It's quite expensive for something that does not sound but it is also why I bought hehehe.
It has its place in my pedal to its usefulness and transparency, so yes, I would do this choice.