Prusa i3
I also have a pair of Prusa i3 MK3S printers also from Prusa Research, both equipped with a Multi-Material Upgrade (MMU) unit, which allows me to print with up to five separate filaments simultaneously using only one nozzle. This is slightly less efficient in terms of filament and slightly more prone to mechanical issues while loading and unloading, but a space efficient way to print with multiple materials at once on an otherwise standard printer layout.

Build volume: 250 by 210 by 210mm
Typical layer resolution: 0.1-0.3mm
Nozzle size: 0.4mm

The Prusa i3 MK3S

Prusa XL
I recently added a Prusa XL from Prusa Research to my workshop, and it is quickly becoming my go-to printer. The XL features a very large print bed, up to five individual quick-switch tool heads, and load-cell based bed leveling. The print area on the XL is large enough to produce a full size helmet in a single print, instead of needing to split it into parts, which is very exciting for future projects. It also has some other benefits such as the fact that the nozzle moves in both the X and Y axis, rather than moving the bed.

Build volume: 360 by 360 by 360mm
Typical layer resolution: 0.1-0.3mm
Nozzle size: 0.4mm

The MMU unit,

PrusaXL printing a part using one of five toolheads

Prusa XL

Software

I do all of my 3D modeling using Autodesk Fusion 360, which has been excellent for making props/objects. I model everything in metric since that is what basically every print slicer defaults to, is what basically every printer and filament measurement is based on, and also because metric is easier to work with in small dimensions. Conclusion: everyone should use metric. Once I have an object modeled it gets exported into .3mf format and sent to the slicer for printing.

I use PrusaSlicer to generate all of my Gcode files for the printers. PrusaSlicer is open source, based on Slic3r, and customized for Prusa’s lineup of printers, though it also includes a number of profiles for third party printers tested by Prusa Research or the community, as well as the ability to create your own custom printer profiles. It is available for free at Prusa3d.com even if you don’t own a Prusa printer