New to this, are these prices worth it ?

As stated, I'm new to this and I have two options currently.

• A pair of Old Gen 1 Sightmark for $400 both with the J arms and mounts
• One generic gen 3 (or gen 2+ at worst) tube for $600 no specs attached and with nothing else.

Individually, without considering the other option, are they worth it ? Now if you had to choose I would assume you would take the gen 3 tube ?