No. Boss, Pyramid, Lanzar(owned by Pyramid), Power Acoustic, JBC(yes, JBC), etc all suck and do not deliver the power that they say they do. A good quality small amp will out perform a junky big amp. Also, do not pay any attention to 14.4V ratings. You will not have 14.4V at the amp so the rating is bogus. Always look at 12V, 20Hz-20kHz ratings for comparison. I agree that the lower line Kenwood stuff is ok. The KAC-829 ($199, 1 yr warranty) says 600W on the front but its real output is 200W @ 12V. A PPI PCX-250 ($299, 3 yr Warranty) puts out 200W down to 10.5V and is much cleaner than the Kenwood.
Cheap stuff is just that.