>>I went with the Hsu VF-2 Mk3 today
>>Now I guess I need to get an SPL meter.

You might have to get the SPL meter from SVS ;\) ;\)

Seriously, SVS still has the Radio Shack analog SPL meters advertised for sale on their web site. They may have run out years ago, but it might be worth checking.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8