Nice roundup, of course like any there's always going to be some good stuff left off of the list.
In the '$99 Headphone Amp' category there's the new JDS Labs Atom and the Monoprice Liquid Spark that deserve some attention. Both measure better than the Magni 3 at the same price and have similar power output. I've been trying to decide between the two and have been leanings towards the Atom.
HT: Sony 940C, Oppo 203, Harman/Kardon DPR1001, Infinity Interlude IL40 x2, Infinity Interlude IL36C, Infinity MS-1 ii x2, Infinity MSW-1
Computer: Elac Uni-Fi UB5 x2, Elac Element EA101EQ integrated amp, SVS SB-12NSD
Dedicated 2-channel: Infinity Intermezzo 4.1t towers, Bluesound Node 2, Emotiva PT-100, Crown XLS 1502, Furman PL-8C