I’ll copy post my answer since amusingly someone asked this question as well a few days ago (guess Planck and Ergodox is blowing up, so hopefully more include ErgoDox in keycap kits 
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As someone who owns a Planck layout, an Ergodox EZ and Hot Dox of which Hot Dox is now my primary I prefer the Hot Dox hands down. The only downside is that the Hot Dox doesn’t have a tenting kit yet. To me the biggest sells of ergodox layout is the split which makes it more comfortable and not really having to move my hands much while having access to much more labeled keys (than the Planck) like numbers/specials/homing/print/etc w/o toggling layers. That’s just my personal take as at work and at home I use numbers/specials frequently.
If you have a MK meetup in your area it may be ideal to go to one and demo the layouts yourself before investing.
Edit: Not only is the Hot Dox cheaper than ErgoDox EZ it’s arguably more mod friendly as case is open source, etc
To address your other concerns, I use my Hot Dox for work as DevOps/programming, but use a Kira (full layout) back at home when gaming and my hands don’t really have any issues switching between the two (or laptop layout when traveling/meetings). It took me about 2-3 weeks to get fully up to speed on ErgoDox. As a best practice whenever I did prod env work I switch to my old keyboard so I didn’t have any mistrokes until I felt at ease with ErgoDox
Your concerns about Planck are warranted in my opinion. I have a Planck for my Plex/RetroArch server at home I got because of the compactness for times when I want physical access, but it’s a pain to do anything in terminal, enter alphanumeric+special char passwords. It would be a real pain to program with I think