Re: 6.5" components
I was also in the same boat looking for a solid set of comps at that budget. If I had an active capable HU, I would have bought the HAT Imagines. The only reason I didn't was because I don't have active capability, and was worried about the tweets being too bright and not having a way to tame them.
I auditioned quite a few sets locally until I found a set that my ears liked. If you can, try to audition the sets before you make a decision. I found that "forum boners" that I read so highly of were nothing special to my ears.
Mids: Helix E62C comps on Arc Audio FD2200
Substage: 12" Alpine Type-R in 2.5@32Hz on Alpine MRP-M350