Interesting thread. I think the SL market is very misunderstood and most who comment on them are not the target market…
I’ve come from a Spesh Levo SL and Kenevo SL, followed by a Whyte e-lyte Works with SX motor and now an Forbidden Druid CorE So I have a good understanding of the low, medium and full power.
The Levo SL was a tester for me which I enjoyed but found it was not ideal for the descending I wanted to do. I changed the the KSL and loved it. Had this bike for 3 years and only considered changing as more of my friends got full fats. Shame as it was ideal for me, got me up every climb I wanted and expanded my fun hugely as it descended so well.
Enter the Whyte and that was the real bridge between the worlds I was looking for. I could ride with full fats and enjoy longer solo rides. The only consideration was choosing when to fit the range extender. This bike handles so well, really had everything an analogue bike did, so playful and rapid around single track. Very capable of pretty much any technical terrain the UK. Bike weighed in at 20.5kg with good tyres and insert in the rear wheel. After the upgrade from Bosch the power became even more usable with 400% assistance at a lower cadence. Never felt like I needed more BUT, I still felt like riding with full fats on long weekend trips, I was a bit compromised on range. Not with most full fats, just the very latest.
There was something not sitting right with me and my group. The Whyte was probably the best of all worlds, lightweight (ish), great geometry that resulted in a great handling bike, more than enough power for me. But I was always playing with the power settings when out without the RE fitted. Whyte did a fantastic job of placing the RE is such a low place that it had no impact on the handling.
Then came and opportunity to snag a Forbidden as a cancelled order so it was just there, in the shop, ready to go….. Couldn’t walk away from that

The power delivery of the Avinox motor is insane and not what I needed at all. The bike weighs 23.5kgs and those 3kgs are noticeable compared to the Whyte but it’s also built and targeted at a different discipline, type of riding. Back to the motor. Avinox tune this by default in a very crazy way in my opinion, it has huge assistance with barely any rider input. I spent my first few rides detuning it down to a level that worked for me.
So all my bikes have been between 19-23kgs but ride in very different ways. The Levo SL and Whyte were quite similar in style but the Whyte was an improvement in every way without losing the ‘trail bike’ feel. The Whyte was far more capable than the LSL but could happily perform in the same way, nimble whilst being capable. The KSL and Druid are also quite similar in bike feel but worlds apart in motor performance. I really wouldn’t want a bike with more weight than the Druid as that starts to become a stream roller on descents. I can still control the weight of the Druid on the DH sections but you do notice the extra effort required. I would like to try the Druid with the 600wh battery as I think that will make a huge difference to the agility of the bike.
I think there is still a purpose for SL or mid powered bikes but the current arms race, acceptance of weight and peoples need to put the least amount of effort in to do laps will limit there market share. I would have stayed with the Whyte and had no interest in the Amflow as I think the bike design is not much different to my very old LSL. I was only interested in the Forbidden for the bike and not the motor.
However, I appreciate I am in the minority, along with other SL/mid powered bikes owners / buyers.