speakers are very important part of the sound system. u need to get speakers that can take more than what the amplifier and the headunit can together can put out. that way you will be sure to take out the best of thesound system.
no point in getting a very good HU and amp set up when you going to get cheap speakers.
i have always used pioneer as it has done me well for almost the past decade and still going strong in my wifes n15. ive just bought an alpine but havent got time to install it. speakers that are in my car now would still be a good set up but we will see with this new HU. might need to upgrade soon as well
the only reason i got rid of it was because it didn't have bluetooth... otherwise i would still got it running in my car :)
with coils the best budget ones would be the BC BRs from OTR in clayton south. i have never had any problems with them so far.