Pentair Legend II / Letro Legend II

I'm shopping for a cleaner and I have found a Letro Legend II, as well as a Pentair Legend II. They look the same. Are they made by the same company?

Will the Legend II, without a booster, perform as well as the Legend I with a booster pump?
Will the Legend II put too much stress on my main pump?
Thanks!

IMHO, any cleaner with a booster pump will do a better job than one without.

JD

Thanks! :)

They are the same uint. Letro Legend is made by pentair.