normally, 2 10" woofers will more more air than one 12... and being each basslink has a passive radiator (woofer without a motor, acting as a port basically) they move more air than a typical 10. 2 basslinks would be unique... and I do believe it would sound much better than a single 12.

If you're gonna spend that much money though, maybe you want to go with 2 good 10's in a small box and a decent amp. Unless you can get basslinks for a good price.

Also, with the basslink, there is no need for a line output converter... it has built in speaker level inputs... so they can be tapped directly from your rear speakers... and there is no remote turn on needed, it sences the audio signal and turns on and off automatically. Nice for newer Honda's, since there is no remote turn on from the stock headunit.