Don't let anyone tell you that cables don't matter, because they do... you are connecting over two thousand dollars worth of epuipment; they deserve to be connected with quality cable. Your ears, and the goal of enjoying your preferred source material to the fullest extent, deserve similar consideration.
Really good interconnects can be found for from 30 to 50 dollars per one meter length... a few names that come to mind are Nordost, Straightwire, Kimber, and Audioquest; you can also go for some of the internet-order-only companies like Bettercables, Rhino, or Blue Jeans. All three make cables with quality parts, but with less overhead than the others.
(If you can go with .5 meter lengths, you can get a higher-grade cable for your money).
You can make your own if you are really handy with a soldering iron, but if you don't like them or if you mess up, you can't re-sell them or return them to the manufacturer... you're on your own.
There is a form on fatwyre.com that you can fill out with your system info (with the option of choosing your price range), and they will usually get back with you in a day or two with recommendations. They have a cable-auditioning program, but I have always hesitated to use it, since your deposit is non-refundable (but it does go towards the purchase of cables).
A caveat: not all components are going to reveal the benefit of quality cables, and not all cables go well with all components... I have Klipsch speakers - with bright or revealing source material and components, silver interconnects are excruciating. I would classify Rotel components as neutral to mildly warm-sounding; if your speakers are similarly warm, silver interconnects might work well; but if your speakers are a little on the bright side (like Klipsch), you would most likely want to stick with copper.
This is just an example of how frustrating it can be to decide on an interconnect... there are so many variables, and the synergy between components,along with the consideration of the sheer number of possible combinations, is staggering to contemplate.
One further note: Do yourself a favor, and remove the name "Monster" from your list of cable candidates... they are as over-rated as Bose, and the muddiest-sounding of the name-brand cables I have auditioned.
Best of luck, and please don't let the cable naysayers (the ones who take pride in what they feel to be their "horse-sense") prevent you from enjoying the benefits of better cables.