I have an ender 3 and ender 5 plus. Both are great printers and I highly recommend them. I also bought an elegoo mars, but don't use it. I need to dust that one off and use it, but there never seems to be enough time.
One thing I did, if anyone is interested, is I bought these for my enders:
Using a drill bit, I slightly enlarged the hole in the aluminum body (don't drill the whole hole out, just a few millimeters into the body). This allows me to insert a piece of tube. I cut the piece of ptfe tube to a point (the point faces the gear when installed) and insert it in the arm such that there's no gap between the arm and the gear. This takes a bit of denial and error by cutting the ptfe tube shorter and shorter until it just fits. (If this is confusing, I can post a picture tonight, just let me know.) Here's somewhat what it looks like, though I've exaggerated it a little, you need a very small piece of tube.
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Then I changed the ptfe tube to capricorn, which has a slightly smaller diameter.
This enables me to print TPU, even Ninjaflex.
It's a very cheap and easy upgrade for your printer at only $11
