I’ll only add that I’ve spent over the cost of a new Aero or JL and received what I perceive to be (3 soon to be 4) very good jackets. So one could say it’s 4:1. While my custom JL surpassed all three five stars in terms of material quality, it was not stitched together any better, actually it was noticeably worse. But tbh that’s not something I care all that much about anyway.
I’ve owned quite a few jackets. I don’t think 5 star can truly compete with the “high” level (price) makers here strictly because the material playing field is not level. That’s why I find the comparison to be a non starter. You will spend four times what you would spend at 5 Star, not two. Having owned three or four JL’s ask me if they are four times better...you might not like what I have to say.
To my knowledge JL will not do a one off pattern for $660, which is what two MTM 5* will set you back. I think both makers do a great job at what they do. I still patronize my favorite makers and always will. But in my wardrobe there is plenty of room for both. I will say this too, and it’s an odd thing: I’m almost always somewhat disappointed with my more expensive jackets. With 5 Star I’ve had the opposite experience of being pleasantly surprised.
Hmm, my math says 2 maybe 3x, but 4x definitely not. I perused 5 Star and a jacket with HH alone can get into the 300s, I'm not entirely sure what a one off custom will run but I'm operating that a HH jacket will run into the 300s before shipping and all that. What Jin mentioned is about what I paid as well, but I do know that the jackets can jump in price depending on what other things are added and speced.