My recommendation would be the SmallHD 703 UltraBright. I've been using this device regularly for nearly 2 years. Extremely versatile monitor with endless features (and SmallHD regularly releases firmware updates) and I/O connectivity, including the ability to cross convert HDMI to SDI and vice versa.
In my opinion, anything smaller than 7" makes framing a burden (and at this point I'm already comprising by shedding the EVF lol).
For color accuracy, you can upload your own calibration LUTs via SD card. There's also a function to calibrate the panel itself using a hardware color probe. I've personally never needed to do this.
As far as a touch screen, I (and many others with much more experience) purposefully avoid that capability. Nothing like an accidental bump or drop of sweat to add more stress to your day! haha
The biggest negative I routinely encounter is the focus puller trying to steal my monitor! ? (hence why it's pointed away from me in the accompanying photo)
