The B60 is a good bit better to my ears than the i1. It's frequency extremes are better controlled, and is a bit more neutral IMO. The most obvious thing to my ears is the i1 sounds more polite than the B60. The i1 is a great amp, but the B60 does everything better IMO. How much better and if it's worth it is a personal thing.
There have been a few B60s going for great prices lately. Maybe buy one and compare at home? I own a B60 and am far too happy with it to sell it. Not that I blindly think it's perfect.
Arcam makes very good gear as well. A local dealer used to carry Simaudio an Arcam and I heard both side by side several times. Both are very good, but Simaudio was always a good bit better to my ears. More refined and just boogied better.
Everyone's ears are different though. As always, YMMV.
There have been a few B60s going for great prices lately. Maybe buy one and compare at home? I own a B60 and am far too happy with it to sell it. Not that I blindly think it's perfect.
Arcam makes very good gear as well. A local dealer used to carry Simaudio an Arcam and I heard both side by side several times. Both are very good, but Simaudio was always a good bit better to my ears. More refined and just boogied better.
Everyone's ears are different though. As always, YMMV.