Carmen,
Yes, the MC2 is a re-issue of the C2, but improved, and less money!!! The C2 was $300.00, you can buy this one for $199.00 or less, and it is balanced in and out!
Yes, it is different than the RNC...Its a friggin Meek. In your face, aggressive, yet smooth and awesome. Actually, it is a real nice compliment to the RNC, because it is low cost and another flavor. So for not much money, I would think anyone that has an RNC would love to add on one of these. Still the best at what it does for vocals, and guitars when you want that sound.
I never gave up my C2's, so here is a Stereo Compressor by Joemeek for under $200.00...
Sorry to be so agressive on this one, but I personally have always loved the C2, but it was well before the RNC was a dream. The market just did not grab onto it. Now I think the users understand why they need stereo compressors, so the new MC2 does offer a great alternative, and if you have ever used the two of them at the same time, one RNC and one Meek...Its pretty awesome.
Alan Hyatt