The US imports are dirt cheap, around 17-18k for a decent-ish one in midnight blue. Unfortunately, the really nice looking cloud white was so rare here, I tried so hard and ended up having to settle for midnight blue as well.
Anyway, you COULD get one of those again, or fork out the extra bucks for a 16GB Nexus 5X (no expandable storage), or fork out some MORE and get a 32GB variant for around 30k.
If your wallet doesn't agree however, you could always get another Nexus 6 and since it's being dropped from support soon, acquaint yourself with XDA and Custom ROMs again. The Snapdragon 805 is still very capable, but it's still a 32-bit SoC and Google is kinda giving the finger to everyone with a 32-bit CPU with no OpenGL ES 3.1 support.