Help me pick a dual extruder printer

[curious aardvark]

the creality is a totally different setup.
It uses a mixer extruder that puts two filaments into one nozzle.
So harder to use different materials and you'll most likely need a lot of purging inbetween changing colours.

It's also not as well built and lacks most of the other features of the t-rex.

You can't really compare an idex system with a mixer nozzle.
That's why the price difference :-)

There's a t-rex 3 ? have to see what changes they've made :-)

Like the springs holding the wires away from the print, that and the new bed look like the main changes. And the filament run out thing. Most people seem to bypass those :-)