Hi... I tried the FL V30 and the RL V30, in my band situation I ended up with a 212 RL with V30. I play an Einstein 100, that´s a different amp from the Hagen, of course
But I had too much Bass with my 412 RL V30, and less warmth with my FL V30 (which I really liked for its very articulated and straight signal, which was usefull to get yourself heard in ANY Mix). Now I think, the 212 is best from both, it´s very straight sounding, but also warm and thick, but the Bass response is faster than from my 412 RL. I also gained Presence as well, I could decrease my Mids and Treble/Presence! AND - I had to decrease my Mastervolumen three times during our practice yesterday evening!
And I could increase my Deep and Bass, without getting lost! I´m satisfied!
Of course it ist a special situation, a small room, with two guitar Amps, Bass and Drums, we play Hardcore/Punkrock. But I also play in a Classic/Hardrockband and the Cabinet sounds good as well! It fits in the Bands´mix, and the diffenrences in Sound I need comes from my Einstein (Eq, amount of Gain, Vol. etc.) and my guitar!
Btw. Trust Papa! If he say "try G12Ks", you should try!

I will do so, if I can get one or two G12Ks one day...