As a Sidrax owner and potential Tetrax buyer, I’d love some feedback on how you get along with the Shnth if you do decide to go for it.
Generally, the programming side of things is something I’m not into but I think for the price it could be a great piece even if just using all the presets that are already out there.
The other thing that put me off is that the community seems to be much smaller and less involved these days, though it does exist.
Sidrax is great though!
I had mine up for sale because I didn’t find it useful when patching and got a little tired of it’s raw tone. I took the sale post down and started experimenting with patching and now I’m over the moon. The green glitch inputs are SOOO fun. The extra barres on Sid make it fantastic for having some melodic sounds and saving at least a couple barres for more out there sounds or sound FX!
It also really starts to shine when you get into cross patching 
Here’s a recent patch I did that utilizes the “sacrificing a couple barres for experimenting” but still having a melody as well as using the press/release gestures to flip n skip the Coco buffers: