There is another option.
I don't have Mnet/DSTV. When a series comes out that we want to watch we buy the series DVD. Then we can watch a series, at our own pace and convenience. Sure, we have to wait, even 'til after Mnet shows it but we're not racing anybody to watch it, and are not OCD so that doesn't matter to us.
I'm haven't done the sums, but I'd be surprised if downloading a series wasn't more expensive than buying the boxed set, and I get the set with all the extra's etc. I pay for what I watch, and not for all the other crap on Mnet that I'm not interested in.
<adopts flame-proof stance>
You can justify downloading however you want. As someone who has worked in the creative industries, I feel uncomfortable taking something without paying (for the product).