Just wondering more thoughts on that mono synth, I was thinking about grabbing one till I read that. Also how do you like the EHX Bass Clone. That one interests me a great deal...
Yeah.. that Mono Synth. I would say that it really depends on your specific application, honestly.
There are some good sounds on it, but despite having "11 different synthesizers", it's really very limited. There are 11 different sounds, and you have the option of adjusting a single parameter for each one (or two if you use an expression pedal). What I found is that on maybe 9 out of the 11 sounds, the parameter that you get to adjust is "Do you want to hear a synth sound or just make ugly blorp noises".
There was really only one sound that I found the parameter knob to do anything remotely interesting at different settings, so really what you're left with is 11 different sounds and not a hell of a lot of configurability. Which, in theory, sounds okay to me; I really am not much of a tweaker when it comes to settings and whatever, so if I had a pedal with 11 different sounds that all work great and sound cool, I would probably be happy with.
Unfortunately, at least for my application, there is really only 1 sound that I could honestly say I would use with any frequency, and my Super Synth does that sound better. And this brings us to the real show stopper, for me, which is the tracking. It's really bad. Certainly for my kind of music, which is up-tempo rock music, it's just not able to handle it.
I think it would be a cool pedal for doing more ambient synth type music, but anything with fast notes or changes will get swallowed up the poor tracking of the pedal. It helps to crank up the dry level, but really all that does is cover up the janky tracking of the pedal.
For the price, it might seem like a cheap way to get some synth sounds into your life, but I honestly found it almost completely useless for what I do, so it will not be going on my board any time soon. For now, my Super Synth will do what I need, and I may look at biting the bullet on a Future Impact at some point.
So, that's my review. Hope it's helpful!
As for the Bass Clone, I like it a lot. I use it all the time and it's basically a bass-friendly version of the small clone with more tone controls and a cross-over. I do find that it can do some weird stuff with the volume at times, like if you get it phased in a particular way you can get some weird artifacts or volume cuts, but usually it's just a matter of tweaking the depth / rate to suit what you're playing.