OMG! Why didn’t I find your channel earlier!! What an useful channel. I am a singer, not a professional keyboard player. I love Casio and currently playing one.
HA!! HA! Dropping hints eh?! It IS fun to play with no? I am still on the fence due to the lack of 5 pin din midi in and out(mainly lack of midi IN). But hey, they may make a midi based version someday that I can trigger the Casio and voices section with my Yamaha RM1X hardware midi sequencer like I wanted. But until then I will enjoy vicariously through you lovely youtubers lol.
Yes, it's very fun indeed and also has some great sounds and features onboard. As for the lack of 5 pin DIN MIDI, this is a trend not unique only to Casio as other keyboards in this price category also tend to not have it and only come with USB MIDI. A shame, but a sign of the times I guess. Plus I guess that Casio deemed the majority of users would not use 5 pin DIN MIDI and would be more likely to use USB MIDI with a DAW and a computer. Still, as Cubik303 pointed out, you can get standalone hosts such as the Kenton that will allow the S1000V to work with an all hardware set up, so all is not lost.
The data entry/ jog wheel on my S1000V is not at all stiff. It's clicky because it rotates in steps, but it is otherwise light and smooth in action. The K1, K2 Volume, pitch bend and modulation wheels are also all smooth when you turn them. Sounds to me that the S500 you tried might have something wrong with the jog wheel. Maybe see if they have another S500/ S1000 that you could try?
I use a 3.5mm jack to jack lead, plug one end into the S1000V's headphone socket and the other end not connected to anything. That cuts off the speakers. You can use any 3.5mm jack to do this, though if you use the 3.5mm jack from a set of headphones you might still hear some sound coming out of the headphones themselves.