I also have a Roadcrafter. It is heavy, but offers great protection.
A one-piece will offer better protection than a two-piece. It will be heavier, hotter and offer better protection against the elements. Sizing is less forgiving than a two-piece.
I would make sure the "armor" is quality armor in any suit I bought. You don't want to pay hundreds of dollars for the one-piece to find that the armor is where they saved the most money. Also, Roadcrafters are NICE. You might look at them, maybe find a "2nd" or used one. Seems people buy one piece Roadcrafters and find out they are too much for their kind of riding, then they sell them used for a considerable savings to the buyer.
I am sold on Aerostich. A buddy of mine who just passed his 6,000th consectuitive day of riding 10 miles or more and has well over a million miles on motorcycles wears and swears by Aerostich. His Aerostich see lots of everything mother nature can throw at it and lasts for a decade or more with extreamly heavy use. Another plus is most of the Aerostich stuff is made in the good ole' USA
While its spendy up front but it will last (unless you slide it down the road) for decades under normal useage.
Yeah if you divide the price by ten years it's peanuts for the long term value.