I have both an HSL and a Vala. Both are great, but pretty different in how they ride.
HSL: better for lighter riders (it's about 3.5 lbs lighter than an identically built Vala), riders wanting a ride feel closer to a normal bike, riding with others on normal bikes, poppier more playful feel. On motor side, its quieter and feels like it rewards rider effort/power rather than just high cadence. I feel (anecdotally) like most of the motor issues were early on. The one I still hear about and that I experienced was a rattle sound from the motor but it still worked fine. It was replaced under warranty and took a couple weeks. Current software has a glitch where if the motor goes to sleep due to inactivity (like you stop to talk for 5 min), when you power on it gives no power until you power off and power back on again. The new ring controller, range extender, and bigger battery continue to be "soon" with no hard ETA. You can pair the bike with a Garmin but not Wahoo to see battery % realtime. You can ride with full power ebikes if you run turbo and they run trail but won't have their range then.
Vala: Feels more of a charge bike downhill, rear wheel gets out of the way on bumps better. Higher stack, so gives a more neutral upright stance and will fit taller guys better. You can run a 65mm stroke shock in the back to make the bike 160/160. Motor doesn't rattle but does have a high pitched electric whine in turbo. Can't pair with Garmin/Wahoo devices to see battery %. Wireless remote is great. Dealer tells me that an LCD display replacement upgrade is coming within next couple months, as is a software update to give >100nm torque. Range extender is available but currently backordered. You can run with full power ebikes at the same pace, with range equivilant dependent on battery size. Caveat: you will have greater range than some of the really heavy full power ebikes with big batteries (cough... Norco...).
Strictly based on ride feel, if you ride a lot of flowier trails with small features to pop off, I'd go HSL. If your rides have a lot of rocks, I'd go Vala (stiffer fork and the rear end has less feedback in your feet).