Okay, I'm not on the fence about this at all, but I will probably give you the most direct answer.
Buy what you need.
There will be a lot of people here saying spend big or go home, ask them what they've got. They may have a focusrite saffire 6 or a Lexicon, but they have never recorded in using it or actually utilised everything they claim to have it for, except 'quality', and 'quality' is subjective. It changes like the weather. If they really spent big or went home, they would all have Firefaces or some other 'serious' interface.
I'm not saying don't get a card, I'm saying buy a card that has what you need. AD/DAs are decent on even the worst branded interfaces and will be plenty. The only true reason you need an interface is twofold. 1. You cant work with ungrounded cables and a Rokit, as this allows external noise (radio waves, your phones 3g signal etc) to affect the sound as it travels from the cable. 2. The internal card is sitting below a magnetic hard drive and several million transistors, and its a hive for external noise anyway (as the DA converters on some of these things aren't even describes as DAs in the brochure, they are electrical signal converters built for control voltages and waaaay noise prone.)
So to be short and sweet, get a card that has balanced TRS out, or XLR for best results, and everything else is convenience. I  chose Lexicon Alphas for my community center's media suite. They are a like $80/£50 and sound sweet, they are also plug'n'play so you can use them for movies etc if you wanna quickly switch to a laptop and have an all important headphones port at the front. I would recommend something like this unless you're a digital DJ, then you want something capable of 4 output (to send a different signal to the headphones.)
Hope you find what you're looking for (and don't break the bank lol)   
