What Amplifier Should I Get?

I currently have MB Quart speakers for my front and rears that have an RMS of 50 and an impedence of 4 ohms. However, my head unit powering them only has an RMS of 16. I'd like to get a 4-channel amp that can provide at least 50 RMS to each of my speakers.  I don't have a separate subwoofer because this is the first audio upgrade I've ever done to my vehicle and I'd like to hear how it sounds with just the speakers and an amp.  In the future I'll probably add a subwoofer and get a separate class D, mono amp to power it.  I don't know how important ohms are but I've heard that matching the amp's ohms to your speakers' is important. I'm not very knowledgeable when it comes to amplifiers but my receiver does support up to 6-channels through its preamps.  My price range is preferably around $200 but I'd be willing to go up to $300 if necessary.  So if anyone could recommend a good amplifier that would meet my needs I would really appreciate it. Also, if you could list what specs I should focus on when shopping for an amp that would be great.

Vehicle: 2001 Dodge Stratus SE, 4-door Sedan

Receiver: Alpine CDE-9881 16 RMS 6-channel Preamp

Speakers, Front & Rear: 6x9 MB Quart PVI269 50 RMS per speaker = 200 RMS total ; 4 ohms (sorry to link to pdf, can't find info elsewhere)

Thanks in advance for any and all help. I've learned a good bit about car audio recently but I'm still incredibly new to this and have a lot more to learn.  

rockford fosgagte  

To spend 2-3 hundred dollars on an amp just to power 6x9's would be like taking a taxi everywhere, even though, you have enough to buy a car. It's just not logical. You need to be introduced to ebay. I myself bought a pair of 3000 watt 12's that normally sell for $270 each on ebay for $257 with shipping for the pair, brand new. Copy and paste this site into your address bar. http://cgi.ebay.com/NEW-MB-QUART-DSC480-4-CHANNEL-AMP-CAR-AUDIO-AMPLIFIER_W0QQitemZ350153998778QQcmdZViewItemQQptZCar_Amplifiers?hash=item350153998778&_trksid=p3286.c0.m14&_trkparms=72%3A1234%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A0%7C293%3A1%7C294%3A50  

dude thats alot for an amp, look at db drives stuff specially the platinum series, to power that ull spend about 150 and have same or beter cuality  

DB Drive sucks!