[Elecraft] KXPA100- How impactful to making contacts?

[Road Runner]

Have had my KX3 for a couple of weeks and love it. Biggest issue I have is even at 15 watts, unless conditions are right, I am having issues making DX contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan dipole. I have been thinking about getting the KXPA 100 but wonder whether it will be enough of a bang for the buck. I use this at a summer cottage, at home I started with a Kenwood Ts-590SG and eventually upgraded the rig with an Ameritron 811H to get more punch. I have no problems getting picked out of pileup so now...
So my question is for those of you that have gone the upgrade path to KXPA100... Did you get enough punch or are you wishing you had gone with more power? I am not really too crazy about going all the way to the KPA500...

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