I've been under the impression that rod manufacturers are now designing rods as 4 piece models. Like Byron I have sold most of my 2 piece rods and bought 4 piece. If I want to use them as 2 piece I just use a rod case for 2 piece rods. I will explain a bit further as to why I went 4 piece. A friend owned a Sage 9' 5 wt XP in a 4 piece version. I always owned 2 piece rods when I decided to get the XP, and that's what I bought. I cast his rod and mine side by side and my 2 piece was a dog! I really believe the popularity of multi piece rods has forced rod companies to look more closely at there design. And yes the 2 piece XP has been replaced with a Hardy Zenith 4 piece, sweet rod. Just my two cents, but if you want to buy a new fly rod I suggest you cast both versions then decide.

Gene