Hi
I've been struggling with lower pack pain for a few years now, I'm getting a sciatica once every couple of years, trying to manage it with physio. For 4 years I've been riding Giant Propel Advanced 2, usually doing 50-100km rides, when I was getting close to the 100 I was feeling a bit of pain but nothing really bad. Since last year however I'm struggling to reach 40km without having serious lower back pain, stiffness around the spine joints. I've had a bike fitting done 2 years ago so its seems fitted to me.

My question is, if the endurance or at least not-race'y type of frames likes Propel are REALLY worth it and I could expect my problems to go away (well I'm aware it won't fully go away but at least I'd be able to do 50km without that pain)?

If so, which ones I should be paying particular attention to? I have an eye on a brand new Scott CR1 from 2015 for a very good price (around 900 euro for full carbon), but not sure if endurance was a thing back in 2015?

I'd appreciate some advice on how to overcome my lower back issues

Kind regards, Simon