I can comment on the 308, 470, 480 and 800 from an actual personal viewpoint. Owning a 308 and an 800. And my neighbour have had both 470 and 480 on home audition after I bought his 308.
Starting with my neighbours old 308(now mine). A very clean sounding amp. Albeit kinda thin on the lower end with my EBEN/ADYTON X3 cabs.
My 800 fills that gap perfectly fine as of now. Same cabs with nothing else changed gives me more bass response. And more warmth.
470 vs 480 is so minute a difference in my book that it is not an upgrade I would recommend. The 180 Watt pair were listened to on Focal 936 cabs with a DP-65 as source.
308 vs 470/480 More of everything. More power, better bass response. I could go on.
For OP.
If you're more of a Jazzman than a Metalhead like me you may be better of going for a 650 or 800. I've made my 800 work with my music. I realize a 480 might have been a more suitable choice for me personally. But I was already considering a 650 instead of a 480 I had originally ordered. I got told that if I wanted the 650 I'd have to wait till October, this was in May. But if I picked the 800 there was one available for me. So 800 it was. And I don't regret it at all.
It's a chonky boi, even compared to a 480.
If you can afford the step up to an 800, do it. If a 650 is all you can afford, still worth going for. If a 480 is the ceiling budgetwise you will still get one the best integrateds on the market today.
No matter which amp you land on there are three strong contenders. But I would still say the 650 or 800 will be better suited to your chosen music genre.
I can give two different builds on my neighbours and my systems. He has chosen power, brute force. I have gone for precision and clarity. Odd choice for a metalhead, but I'm weird anyway.