I have an all 200e 12 panel system and I think it’s a very unique and interesting sound especially for sound design. People love it or hate it. I think because of the sound of those oscillators - 261e / 259e wavetable. I would say a 200e is more akin to the sounds of Harvestman (Industrial Music Electronics) and many people get mixed up with talking about the 200 and the 200e system - they are very different.
I went all “e” because it’s a system, and because you can use the presets in a creative way. Many people miss the point when mixing them with clones. I see no point mixing clones with 200e unless they have preset capability. For me, if you you don’t intend using the presets then I wouldn’t advise getting a 200e system at all. The 200e is specifically designed for live performance and by utilising the preset system. The power of that system is the presets. You can use the sequencers to sequence the presets or sample and hold or random voltage the presets. Blind patching with alternate presets. Lots of happy accidents with them. Start with a preset, improvise for 20 minutes then recall back to we’re you started. Change a bit, save a new preset. Turn the preset into another sequencer. That’s something pretty unique in modular. Preset switching from slow to madness then back again. So you get huge shifts and changes in music styles at the press of a button or a trigger from some place else in your system. Think of it like META mode on Braids… but the whole system does it. Presets = Metasequencing.
The touch controller - 223e brings the 200e system together and makes it more like an instrument than a collection of modules. The timbral control you get with it is something you can not really create by programming. I’ve tried a lot of controllers and nothing comes remotely close.
I see Easel’s with a 223e controller attached, which to me is wrong. It’s a marketing ploy by the previous BEMI management to try to sell more Easels. It’s like using a computer mouse to the play a grand piano! Use the 218 - the thing it was designed for, not the thing that came out 30 years later for a completely different system 
I also have an easel clone which sounds a lot darker than the BEMI version, which to my ears, sounds more brighter and metallic - heres is an album I made with the clone - https://mudlogger.bandcamp.com/album/touch-activated
This was when I had a 158 clone which I changed out for a 261e