Looking for recomendations on 15" woofers

I have 3 high efficiency projects planed. For all 3 I was thinking I might be able to use the same 15" Woofer.
I have 2 15" sub-woofers, so this would be mid-woofers.

1: Vision B200 full-range OB with Woofer. XO 150 Hz to 400 Hz.

2: SEOS 12 or SEOS 15 "Econowave" style with Woofer. XO 800 Hz - 1200 HZ In 6 to 8 Cu FT box

3: JMLC 400 1.4" Mid horn with ~ 800 Hz XO In 6 to 8 Cu FT box.

Research indicated that "Pro" style drivers are designed for all 3 apps.

I wanted to keep the Budget around $100 per driver

Research indicates several high end drivers might fit, except for cost:
AE TD15M
Altec 416
Altec 515
JBL 2226H
B&C 15TBX100

Just for reference, I am currently Running a DCX2496 / Class D amps/ OB with Low Q drivers, so I am aware that there are trade-offs on driver Q.

I know the Eminence Beta 15 would work for the OB, but will it sound good at 1K Hz?

Any thought or recommendations on a suitable driver would be appreciated..