Newbie here. Just signed up to post that I have 200km on a GasGas MCX4 and am really impressed with the SRAM drivetrain motor so far. All the new full power Gas Gas eMTBs have the Sram Drivetrain. Upper models with wireless derailleur and dropper post. Mine has mechanical GX.
Two modes is slightly limiting, but the app is super easy to customize each mode before or during a ride. I only have about 20km previous experience on a Bosch CX, but I would say that the intuitiveness of the assist delivery is as good or better than "EMTB" mode. Range seems to be about 75 km with the 630Wh battery. I think it might be quieter than Bosch.
The MXC4 seemed to be a much better value in the market in terms of component content for the price. 160mm Lyrik with charger 3 up front, RockShox Super Deluxe Select+ (their website incorrectly lists as Deluxe Select +) out back at 140mm. Full carbon frame. Couldn't touch that spec for under $5k US anywhere else. Paid $4,500.