I thought my EddieCurrent Super7 was strange, but here this beast comes... Think about all the fun when a tube goes bad but still looks somewhat normal.
I agree with that Grado and Folkvangr have great synergy - I really hate that word - but there you have it.
If you're looking for synergy with Grado, the $149 (out of production) Nitsch x Piety appears on the used market usually around $150.