Audax/Polydax makes great, inexpensive drivers.
both of my home two-ways use Audax 1" silk dome tweets with Madisound 6.5" woofers. i love the sound. the ported system get solid bass in the 30's and the smaller sealed system drops off in the 50's
my other two-way uses the smaller .75" cloth tweet with a 5.25" Madisound driver. ported, I get decent bass down into the 80's
all three pair probably cost a total of $450 for parts. and they sound better than most "popular" systems, IMO.