Some of this information was previous posted in another post:
What is the advantage of the Fully Enclosed Creator Pro 2 (CP2)?
Since the CP2 is fully enclosed, you can print ABS and other filaments such as PETG, which tend to warp as they cool. On the other hand, many people are moving away from ABS since new variants of PLA are gaining some of the advantages of ABS.
A challenge with fully enclosed 3d printers is that they become costly, thousands of dollars if you want a larger print size (volume). For example, the FlashForge Creator Pro 2 is an IDEX dual extruder printer and is fully enclosed, but it has a print volume of 227x150x148 for about $800. For $700, you can get a JG Maker Artist D Pro, an IDEX 3d printer, with a print volume of 310 x 310 x 350. These are direct extruders 3d printers that will be faster than entry-level 3d prints, such as the Ender 3.
Advantages of IDEX 3d Printers
The advantage of an IDEX 3d printer for most applications is not printing in 2 colors. Instead, it is the ability to use dissolvable supports.
Disadvantages of IDEX 3d Printers
When the second nozzle is idle, the first nozzle often leaks filament. This causes excessive stringing and print defects. These two printers use slightly different approaches to solve this issue. The Artist-D attempts to brush off the inactive nozzle, CP2 uses a flexible plate to block the bottom of the idle nozzle, basically closing it.
I like how the Flashforge printer handles dripping filament from the currently idle nozzle better than the Artist D, and it is much easier to set up.
The default for the CP2 is to use a wipe wall around your printer when printing in 2 colors. This works quite well.
Slicers
The Artist-D is open source-based and works great with any slicer supporting Marlin. I have used the JGMaker supplied slicer, Cura, and IdeaMaker. For this printer I prefer IdeaMaker.
The Flashforge Creative Pro 2 using a binary header on their files, and so far, I have only used the Flashforge printer with their slicer, FlashPrint as I cannot get it to work with Cura. Still, I am waiting for a profile for Simplify3d from Simplify3d and will check to see if the quality is better when it arrives.
Which Printer would I Purchase?
If you are looking for a plug-and-play, IDEX 3d printer, buy the Flashforge Creative Pro 2.
If you are willing to do assembly work and some tuning work, I think the Artist D is more flexible and produces better prints when properly tuned.