Is the 45 SET you are considering also from Triode Lab, and if so have you reached out to Frank Ng at Triode for speaker recommendations? He is very helpful in that regard, he's heard his amps with lots of speakers and knows what his customers are using.
I have a EL84SET-FFX from Triode Labs, about 5-6 watts. My experience has been higher sensitivity means louder but not always better. I prefer my Triode Lab amp with my Coherent Model 10's which are about 94 db, over Zu Druids which are 101db (there are other amps where I prefer the Zus). Every amp/speaker/ear combo is different. Your Omegas may be fine.
I have a EL84SET-FFX from Triode Labs, about 5-6 watts. My experience has been higher sensitivity means louder but not always better. I prefer my Triode Lab amp with my Coherent Model 10's which are about 94 db, over Zu Druids which are 101db (there are other amps where I prefer the Zus). Every amp/speaker/ear combo is different. Your Omegas may be fine.