The Smaart software in the latest firmware package gives you RTA-ing capability (but you'll want something nicer than an SM-58 to do it with. That said, it does look at the frequency spectrum and pin point hot-spots and feedback events which when used with the parametric eq's on the fat channel a channel input, or subgroup or main or aux send to wedges can help you fine tune your live or studio rigs.
This is a very nice feature for the home studio guys to be able to better dial in your monitors to a flat response. Might save some of those mixes! And for the live guys, it's just another highly useful tool on a Presonus. The guys down there rock! I've spent a fair amount of time with them as a dealer and a user, they are generous with their time and their knowledge, and the you tube videos are incredibly helpful!
I suggest buying that 24.4.2 sooner than later. There really isn't anything in its class for feature set when you think of the value of Capture and Studio One and Universal Control, the tech support and the knowledge base is amazing. And they are so far ahead of everyone else in remote control capability.
I have worked with every brand of "Econo" digital boards, and the Presonus guys really got it right. I have also spent time with the new Behringer X-32 "engineered by Midas" console. For the money it's really nice. It doesn't have the recording capabilities that Presonus has, but it is a full 32 channels of mic pre's that sound very good. It's good looking and tempting, but durability with their mixers have always been more than suspect for long term hard working use.
I still like the Presonus pre as well as its processing better. But the X-32 is a real player in the low dough market. The big question here is "engineered by Midas", what does this mean? It means the Midas guys drew it up and sent it to China where in "Behringer City", yes Uli owns a "company store" and has built a huge complex in China where the thousands of workers all live, eat and shop. Scary. So if your concern is that you need 32 channels I'd say look at the Soundcraft Sic or strap a pair of Presonus 16.4.2's together. If you can live with 24 working channels, roll the dice and see how long the Behringer lasts. It does sound good and it is slick. It has moving faders and scene recalls as well. But the Presonus just feels and sounds better. Uli recently bought Midas/Klark and Turbosound in order to bolster his engineering. Not sure how long they will be around, and Turbo really has no reason to live anyway. Not a bad speaker, their are just many more have surpassed Turbo in the market place.
The Soundcraft Sic is crazy nice, but does have all the iPad features in ViSi, but you can control you monitor levels remotely, just no access to channel strips, only faders. And alas the Behringer is "working on an iPad App".