The situation : I want to install a pair of 6.5 inches mid-bass drivers
in custom 7 litres closed enclosure located at the rear of my *small*
car.  Below 80 Hz is already covered by a NHT 1259 in a 2.5 cu-feet
sealed enclosure, also at the rear and powered by an Alpine 3549 amp
(300 watts bridged at 4 ohms).  HU is an Alpine CDA-9815 (built-in
active crossover and parametric equalization).  Those 6.5 will also
contribute as rear-fill but I'll low pass them to about 500 to 1000 Hz.
Amp for those drivers is unknown at this time, it may be the HU itself
or a 50 to 75 watts outboard amp.  Front components will be 5.25 +
tweeters but unknown at this time (look for a subsequent post here in a
few days!).  Sound quality is the most important, SPL is already plenty
for me at 125 dB.  I'd like to keep the price under 200USD.  So far,
I've looked at those :

Audiobahn AMD60Q : Looked great but are incompatible with closed box due
to T/S parameters.  Too bad.

Dynaudio MW 170 : I use and love Dyns at home but they are expensive as
hell and some says they are somewhat less efficient.  Also, it's kinda
sad to use a driver with such a great midrange quality only below 500
Hz... (F3 = 78Hz @ Qtc = 0.81 in my enclosures)

Image Dynamics CX64 : Mostly same comments than Dynaudios about the
midrange "waste"!

Kicker RMB6 : Now, here is a real mid-bass at affordable price!  I like
that one and appreciate comments about them.

Morel-USA WR-6 : Looks great but I'd have to buy them at full retail
direct from them since there are no distributor in Canada.  That means
near 400$us a pair, ouch! (F3 = 60 Hz @ Qtc = 1.02 in my enclosures)

Morel-Israel MW168 : Great specs, manageable price and Madisound sell a
4 ohms version. (F3 = 76 @ Qtc = 0.75 in my enclosures)

I've checked at Vifa and Peerless but couldn't find anything better than
those I have listed.

Any discussion and opinions appreciated!

Thanks!

(Photos of the current install - except HU that changed - and car can be
found at my web page, URL follows.)