I HAVE A 2006 HONDA ACCORD EX SEDAN AND I AM REPLACING THE FACTORY SPEAKERS ANY SUGGESTIONS?

You can have an expert at an audio shop give you options and advice. The main limiting factor is the radio unit and the power it puts out to the speakers. You can spend money on speakers that may not work with that particular unit. Regardless of what you finally decide please remember that hearing loss in the USA is at an all time high due to loud noises, music, etc. primarily from clubs, headphones and super loud sound system in cars.Cars, due to being enclosed, can concentrate the noise. The reason you hear sounds is that in your ear canals there are small hairs enclosed that vibrate. Too much vibration or vibration for extended periods of time (been at a concert only not to be able to hear normally afterward?) that vibrate these hairs to the point of damage. This is not repairable. At first goes certain frequencies that sort of force you to raise the volume even more causing more damage. So please be careful with the sound levels once you got the speakers upgraded. Good luck.

for the back i would go with pioneer 290w 6x9's and for front http://www.crutchfield.com/S-qeE9X9kijXp/shopsearch/6.5_polk_speakers.html any of these would be good and probably a 4 channel 400w amp would be good to push them all. but it would be pretty pricey.