OK all...I've read numerous posts regarding speaker options for the 300E...I just replaced the Becker unit yesterday with a JVC KD-SH55, 50x4 with a trick motorized faceplate...the difference is like night and day already with original factory speakers still in place...I only want to replace the front and rear speakers (i.e. - no door mods to add speakers, no dash cuts and no subwoofer as the JVC unit has enough capable bass adjustments options for my tastes)...I listened to 4" Polks and 4" Infinitys only so far...the Polks have more bass, the Infinitys have more highs...overall I think the Polks are the better speakers over the full range...I know MBQ's are rated highly, as I'm sure many more are...Any other opinions out there? I don't want to spend more than $200 or so for both front and rears...If I'm not asking too much, please be specific as to why your speakers and/or opinions are the best ones (i.e. - clarity, midrange, highs and lows)...thanks in advance to all of The Brothers of the Benz's...L8r, Bill