Best solid state headphone amp under $1000


I'm looking to upgrade my channel island VHP-2 to another solid state amp under $1000. Here are the contenders that I can think of. Let me know if you have compared any of these directly, which is the best in your opinion, or is there another you would suggest.



headamp GS-1
stello HP-100
burson HA-160
PS audio GCHA
lake people HPA V181
blue circle hat peed thingee 1 or 2
rudistor nx-03
graham slee solo
musical fidelity M1HPA
linaeum66
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In this year 2018 many new earphones and headphones are launched so I suggest you go with new earphones or headphone.