I have an Inverto Black Pro C120 on my 1.2m solid prime focus dish as it had very similar spec to the Inverto Black Ultra LNB (IBU) that I have on my 1.1m mesh offset which had great results as Burnham says.
Few years old now so not sure newer LNB's have made any advances.
Old C120 thread here if that's what you after otherwise IBU as above https://www.satpimps.co.uk/showthrea...ht=#post886938
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