I recently got a CT15 as my first Festool vac. I am happy with it. Uses are with ETS 125 REQ, track saw, and biscuit joiner, pocket hole jig, other small tools. I didn’t need Bluetooth, wheel brake, or manual filter clean. I did order the MIDI hose garage which is compatible, but have not received yet. That’s really my only complaint - the cord and hose storage on the CT15 leaves a bit to be desired out of the box. I will second that I love how light weight the CT15 hose is. I’ve never been zapped by a vacuum so not worried about antistatic at this point. Tool activation and variable suction are awesome.
I suggest make sure you know the differences the MIDI gains you, and if they matter to you. If price is important (it was for me), in my opinion the CT15 is a great value.