Yeah this is a really tough choice for me. I know that CoreXY is V2 of Hbot, and I pretty in that case would just go why not get the better version, and the FB group for the Ender-4, people say that Creality has horrid customer support, and some people are getting oval prints when trying to do circles, which seems like they didn't build it 90 degrees exactly etc and some quality issue, though I don't know . You're right, don't need another bed just a stronger power supply and maybe the cork and the "cotton" which I do have. I'm wondering if I should just save that money and get a resin printer, because that's my next step, to learn Resin (Tevo Firefly, Wanhao D7, Anycubic Photon are all options). Both the Ender 4 and X5S has their pros and cons, so hard to decide >.<