The differences between the two are more than what you were told when you called. Although the Forecast is called "Fast" it most definitely is not. If you compare the CC (common cents) data on the two blanks, the Forecast has an AA of 60 and the H&H is at 64 (the higher the faster). Comparing the ERN of the two shows an ERN of 3.27 for the H&H IM6 and an ERN of 2.67 for the Forecast. The IM6 is faster and will handle more 2wt line past the tip. Conversely, if you casts are going to be averaging right around 30' the Forecast may be your best bet or use a 3 wt on the IM6. The IM6 is also a lighter quicker recovering blank. Depending on the distances you'll be casting, you may also want to consider their IM7 kit. Their IM7 blanks are really Pac Bay Rainforest blanks, and the 6'6" 2wt has an ERN of 1.92 and really loads nicely at short distances with a 2 wt line. I've built and own all 3 of these, they are all nice, but they are all very different and appropriate in diferent situations. If I had to pick only one it would be the IM6.