I have been riding the solo 6.5 for almost 2 years now and it is my all time favorite kite in this size, the 6.5 is the most fun and well working of all the solos if you ask me
I love it for wave riding especially as it can drift like nothing else and turns on a dime, the power input feelin in the bar is very responsive. I also use it for wakestyle occasionally when there are no waves when it´s windy and I can still throw mobes etc with this thing. It boosts well but the single strut design has some limitation when you are loading up very heavily. And of course there is a bit of noise from the canopy when you sheet out during a turn etc, but this is a very minor thing. Overall an amazing little kite with a BIG wind area, it has super good low end but can also handle a lot of wind..
I highly recommend in particular the solo 6.5, such a fun kite with a great potential in all aspects of kiteboarding.
and oh yes it packs down to nothing when you want to travel and is also super light.
you can say I´m kind of biased towards LF but within the LF range I prefer the solo over any other kite (envy, wow, hifi) in this size also.