Car Audio: 2x10s or 1x12? Ported or Un-Ported?

[PetFish]

I currently use a 1x12 in a ported box, have been for 6 years, but I have my old un-ported 2x10s and I'm wondering if I should switch and if I do switch to the 2x10s should I port the box or leave it.  I want more punch and clarity.

I listen to primarily metal and rock in the car but also some pop and New Age (Secret Garden) and, well, pretty much anything.  I do have a few dozen "untz untz untz" tracks in there but not much.

Without getting into mathcraft and hardcore number-crunching does anyone have any advice?


In case anyone wants the gory details:

Alpine MRP-M650 Amp - https://www.crutchfield.ca/alpine_mrp_m650_600_watts_rms_x_1_at_2_ohms_p/500mrpm650.htm
Alpine Type-R 12" (in ported box) - https://www.crutchfield.ca/alpine_type_r_swr_1242d_12_dual_4_ohm_component_s_p/500swr1242.htm

Pioneer TS-254F 10" (x2, in un-ported box) - https://www.crutchfield.com/S-0GMc2sZHrB7/p_130TSW254F/Pioneer-TS-W254F.html