I'm into my second season on the RC10s (MP 27) and am also very happy with them. I switched from Deeluxe Suzukas for what seems to be a prevailing reason: moderate heel lift in the Suzukas no matter what I did, and pretty much zero heel lift in the RC10s.
I was OK with the stock Flo liners. They weren't super comfy, but I didn't have the squirminess or other issues others have complained about. I did heat mold them a bit with a hair dryer, which helped with a couple of minor hot spots initially. The toe area fit was great from the beginning, which was not the case with my old Deeluxe (Intuition?) liners: with those when molding I had to use a toe cap + rubber wedges between the toes, and usually more than once to get it so my toes weren't super cramped.
However, this season for the RC10s I went with Intuition Pro Wraps, for reasons most people have made the switch: claims of snugger fit, stiffer, better overall performance. Initially I was tempted to go with the tried-and-true Power Wraps, but was concerned about crowding in the toe area. Again, the stock Flo liner/RC10 combo was a perfect fit for me in the toe area, and I didn't want to lose that. The Pro Wraps as described on their website fit my needs exactly: "PRO WRAP liners are new to the Power Wrap Series, and are an excellent option if you require the medium body thickness of the original Power Wrap, but are looking for more room in the foot and toe box area." The neoprene toe section of the Pro Wraps is very similar to the Flo liner.
So for anyone thinking of Power Wraps or similar in RC10s but are concerned about crowding in the toe area, the Pro Wraps could be a great option (the Pro Tongues have a similar toe construction, just in a tongue version). And yes, compared to the Flo liners, the Pro Wraps are noticeably more comfortable and snugger, and perhaps a tad stiffer.