The Kobra Plus is the closest match to the Kobra X overall, with the Kobra 2 Plus also being closer than the Max if you care about size and “Plus” class hardware. The Kobra Max is the furthest away because it is mainly a much larger-format machine, while the Kobra 2 is the smallest and least similar in class.

Why Kobra Plus is closest

The Kobra X is a multi-color printer with a 260 x 260 x 260 mm build volume, fast printing, and a modern smart-feature setup. The older Kobra Plus is also a large-bed, single-material printer, so it is closer in overall format and footprint than the smaller Kobra 2 or the much larger Max.

Rank by similarity

  1. Kobra Plus — closest in overall printer class and intended use.
  1. Kobra 2 Plus — closest if you want a newer, faster large-format machine, but it is still a different generation and feature set.
  1. Kobra Max — similar only in being large; otherwise it is the most different.
  1. Kobra 2 — least similar because it is the smaller standard-size model.

Practical pick

  • Choose Kobra Plus if you want the nearest “old-school” feel to the Kobra X.
  • Choose Kobra 2 Plus if you want the nearest modern alternative in speed and smart features.
  • Choose Kobra Max only if build size matters more than feature similarity.
  • Choose Kobra 2 only if you want a compact, entry-level style machine.

One-line answer

If you mean “closest overall,” the answer is Kobra Plus ; if you mean “closest modern upgrade,” it is Kobra 2 Plus.