Demo the PS97LS or the 6.1L. The PS100L is IMO a failure and I'm fairly happy they're dumping it. Too light for its construction (thin box beam), has the sweetspot of a 95in² racquet, no plow, no power, none of the advantages commonly associated with lighter and bigger racquets. If you insist on getting at light 100in² racquet, I'd demo something else.
Can't talk about the 6.1L myself. However I did playtest the PS97LS and found it was a very convincing frame, worth a demo.
I use a 95L, my GF uses a PS100L and I recently bought a 97LS. I like the 95Ls feel so much more than the others. 100L swings so much easier and the 97LS has substantially more power but "low" feel for my liking.