@MS sorry, I am a bit slow on the uptake here - I didn't go from a rear boot, but from an R style. I had the lace HRT first and now the Boa.
I do like the laced version, but the Boa is a distinct improvement - I like the Boa closure, its ease of use and adjustability - and the 2019 boot is an improvement too. It is extremely comfortable, provides good support and releases very well:
Good luck and earn yourself an IPA.