Pioneer DDJ-Ergo vs DDJ-S1

Hello it's been a while since I've posted on here. I'm currently in the market for one of the 2 controllers mentioned in the title. Reason for me choosing 1 of these particular ones I can get a really good deal on both. I plan to purchase a DDJ-SZ in the future when I sell my current Main setup, these controllers will merely be for smaller events and events where I have limited space for gear.

Both seem to be pretty comparable to each other my question is which is a more solid/ reliable controller? I know Pioneer has good quality regardless but I'd be curious to know which one feels best.

Also which one will maximize the use of Serato DJ (Program I'm currently using)? for ex how well its mapped out to the program.

I'm looking to purchase soon so any advice would be much appreciated.

Thanks