While I love Marantz, I would suggest that "Matching" (I'm assuming you mean matching by Brand -AND- Model line) for the sake of similar looks alone misses the point of 'Hi-Fi' altogether. Although, one has to choose his own priorities.
To me, atleast, its about sonic performance first, reliability second, and ability to be serviced longterm third. Looks, and whether or not they match... let's just say, it's a minor consideration at most.
Regarding speakers... choosing what sounds good to you, given the music you prefer, is a very personal decision. The one thing you need to determine, though, is the volume levels in your listening room and the power limitations of your receiver's AMP Section. So... I'd suggest moderately efficient speakers. I used to tell customers to buy what sounds good to them. If they can't afford that now, you have a difficult decision... buy the closest approximation and risk 'having to' upgrade later, or wait until you can afford what will make you happy.
That's not always easy, though...