Choosing the Right Converter and Antenna for Cyfrowy Polsat: Single vs Twin, 90 cm Dish

Hello, on days I will be a happy owner of Polsat Cyfrowy. I buy the satellite dish myself, probably aluminum 90 cm.
I have a problem with the converter, I would like to receive two satellites so I think that the multiblock converter remains the question of whether twin or single?
And what I want to achieve - connect two TVs to the decoder and that the channels do not duplicate, so that the same thing does not fly on two receivers, is it possible? Teee my dreams;>
To tell you the truth, I don't understand if I need a single or twin converter,
thanks in advance.

Monoblock or monoblock Twin.
One decoder - one TV set.
Need more set-top boxes?
Take a multiroom.

I understand more or less but in the future if I wanted to connect a decoder to the other TV in some way, then without multiroom there is no option?
I also mean costs.

It is possible, but it will be the same on both TVs. If you want to have different programs, only a second decoder and a multi-room.