Re: Yes, it's cliche, yes it's overdiscussed, but yes, I need new subs.
I've put together a Google spreadsheet to help me make the decision.
It calculates how many subs it would take to reach 154dB (approx 4 LABs) based on the 1 watt sensitivity (I corrected it if it were based on 2.83 volts) and the nominal power each can handle.
I would put pricing on the sheet, but that is something I can't publish.
And, if you have another subwoofer you'd like me to put on the sheet, send me the info or link and I'll put it on there. That link will update automatically when I add more to it.