I am also a 4.0 and I've been using the IG Prestige Pro for about a year and like the feel and stability. Before that was the YTPP.
If you're really torn why not get both the BLX and PP? Try hitting with each with same string and setup for several hours. Then sell the one you like less. Obviously it will take time and some money, but if you're serious about it I don't see how else.