Re: enclosure comparison
If you're set on buying JL, i'd go with the second.
Personally I'm going to suggest reading around here, and getting something better than a w7, cheaper, and have money left over for an amp, and have someone on here build a custom box specifically tuned to what you want. You would end up with a MUCH better system, for less money, IMO. $600 is a lot for a sub/box
PAST: 1976 International Scout. JVC head unit, pioneer 6x9's, Focal 5.25 comps, and a Kicker S12L7 in 3.25 cubes at 37hz: Crunch PZI 1500.1 amp at 1 ohm. 1/0 throughout.
Replaced the factory 8 track and single 4x7 speaker behind the dash
PRESENT: 95 325TI. JVC HU, 5.25" PG RSD, Sony Xplod 604EQX 4ch built in EQ, 10" MB Quart Discus in custom molded 'glass enclosure
Refs: JLJunkieMX107/ HawaiianBassHed/ bk12321/NightDrifter05/Annao2485/nitro_freak1/tapout/juan_caliente/fasfocus00/TheFiverMan/Louisiana_CRX