Feature:
You can read about that elsewhere, but in real world use. Rotation speed, grunge, stereo! It's all there. Works well on organ and electric piano. If you forget your adapter (sold seperately) it runs on battery. Nice touch. Haven't changed batteries in 4 months. Heavy pedal so it won't slide away. Stomp worthy pedals.

Quality:
Built like a tank. Don't drop it. You'll break the floor.

Value:
Can't knock the product but it is pricey.

Desirability:
Ummm. It stays below my shoe. The psych light's cool.

Sound:
Very impressive, expressive, and tuned for recording and stage. I have not found a keyboard with a Leslie effect at any price that can match the realism this pedal emulates. I no longer lug my Motion Sound around to gigs. You are no longer restricted to miking a rotor to increase volume. Just use a larger amp! No quality loss.

Ease of Use:
It takes a bit of fiddling but each knob returns definite audible changes so very soon you understand which knob does what. Only difficulty is having to reach down to your feet for adjustments. If only there were an extension with the controls that you could place on your keyboard.

Support:
Dunno.

Overall:
Portability, sound quality, reliability, durability. Makes pretty much any keyboard sound like a Hammond. What's that worth to ya?

Feature:
So much more than I expected.

Quality:
Very nice.

Value:
You're getting what you pay for.

Desirability:
It is fun to use in a dark room but that's not really all that important.

Sound:
Very hard to find but I did. I haven't even begun to touch the surface of what the RT-20 will do. But there is no doubt. It's awesome!

Ease of Use:
A bit of a learning curve for me but I don't have a whole lot of time to put into it.

Support:
Rolandus.co was helpful with a couple of questions.

Overall:
This is a keeper. It isn't going anywhere.

Feature:
Once you get the foot pedal, the sky`s the limit

Quality:
Solid as a rock

Value:
I think that all musical equipment is much too expensive.

Desirability:
I can`t get over how closely this pedal resembles an actual Lesly. If it`s a Lesly sound that you want, this is exactly what you need and in my experience,20 years, it`s the best product of it`s type on the market.

Sound:
Clear and very realistic lesly sound.

Ease of Use:
Simple as they come

Support:
I would imagine that it would be great but I`ve never needed it.