I think these look very promising and for only $42 too. https://www.parts-express.com/faital...-ohm--294-1150
I own the SB Acoustics SB29RDCN-C000-4 Neo Magnet ring Dome Tweeter in my van and can compare it to my AudioFrog GB15 in my CX5 and GB10 in my F150 and in my option this SB29 tweeter is the best $60 I have ever heard.
I used these in my CX5 as full range tweeterless and they were very good for midrange. I think these would do well as a dedicated midrange.