I'm putting 100w X 4 into my MB's. if this is what you plan on doing, you won't be disappointed. I'm not sure what model your lookng at, but mine are rated at something like 70w or 80w RMS. Just make sure you get a good amp and keep the gains down.
2006 Jeep Liberty
Adire Audio 15" Brahma running off Cadence A7hc, Clarion hu, MB Quart 6.5s and 5.25s running off old school Punch 800a4
146+db @ 38hz with 1200w and a single 15"
Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
*Vb = vol. in cu"
**R = sq.rt. A / Pi (for square/slot port)