upgrade suggestions (B6 A4)

[JoshDub]

First off, I drive a 2003 A4 sedan. No Bose, no Navi. I think its time to upgrade my system and maybe rewire everything. (tweeters crackle all of the time). I dont want alot of thump (the stock has semi-enough for the time being). Im looking at component speakers and tweeters. My friend introduced me to sonicelectronix.com and he is looking at going the same route.Im not looking to spend alot of money, just looking to refresh the system. Here is my question.

Has anyone worked with these people?
Im looking at these http://www.sonicelectronix.com/item_6663_Blaupunkt+PCcb650.html# decent speakers? Will they even fit? I know they are 6.5''. What else would you recommend around that price?

What should I use when I rewire?
How much does the stock amp hold?

Thanks guys, I know this is a poorly pieced together post. Its late and I just want new speakers that dont crackle all of the time.

[NastyNice]

I don't know jack anything about audi sound systems, wat fits, wat works, etc... however i do know that for only 10$ more these speakers are way better

http://www.sonicelectronix.com/item_11648_MB+Quart+FSA+216.html

get them over the blaupunkts for sure

[JoshDub]

Those speakers look like a good option. Thanks.
WHat about these? http://www.sonicelectronix.com/item_7375_Audiobahn+ABC600V.html I have heard of audiobahn before, but I have never heard how good their quality was.

[NastyNice]

I never heard audiobahn speakers myself, but when I used to be on a car audio forum they were pretty much considered by most members as one of the worst companies...

[JoshDub]

haha well I will stay away from them. There is usually a reason for a group of people to consider a company pretty much crap. Ill try the MB quartz. They arent that bad of a price at all.