Yup, he started it with a Silvia and Rocky back when you could still buy 250g from Hill and Valley, first time I'd had a decent espresso so I got the same. Silvia was PIDed and I was happy.
But OH wasn't because Silvia was a bit slow for milky drinks. DB's were in their infancy and outside my budget (remember the Reneka?) so in came Izzo Vivi and Silvia went to inoculate t'other brother. Rocky went and a Mini came, but OH was still not happy because Mini was messy. A Mahlkonig Vario grinding into a hopper sorted that out.
(Cue sad piano music)
But now I wasn't happy, my espresso was sour whatever I did. I thought it was my HX surfing skills, but despite Eric's thermometer I just couldn't get back to the rich espresso I'd had with Silvia. I lost interest. Other things took coffee's place.
And then, a lucky break - I inflicted the Curse of the Red Bag on my brother for 6 months. And with the resulting tongue lashing I learnt I'd been suffering from "Nordic-style roasts". And in another lucky break Rave started roasting 5 minutes drive away. Siggy & Italian Job FTW.
Temperature surfing was still a faff, so an Expobar Brewtus IV has displaced Vivi, and life is good.
I can't claim the palate or expertise of my brother, so lots to learn. I think a grinder upgrade is on the cards, and since half my espresso is produced with a MyPressi+Porlex at work, I've been reading up about hand grinders. I think an HG One on the desk might be a step too far, though.