Hi there,
What is your weight? is it your only board? local conditions are just the lake, no wave sailing at all? any bigger or smaller boards in your quiver?
just as a first best guess - 105L FreeWave would be best for flat water/lake sailing, as it has a bit more planing/volume advantage vs the more wave/freestyle/bump and jump 95L? on the other hand, for 5/5.8 sails the 95L could be big enough for you - your TripleX 105 was 61cm wide, so exact same width as your TripleX...but I would compare the TripleX more to the Blast 100, at 62cm wide, that is way closer in style of board. I was involved in testing both of those models.