What do you like so much about them? That they are much lighter?
The 85s are heavier than my HP80s.
The other tanks I’ve done SM are HP80s and LP50s. The 80s were what I had most of. They were okay, not ideal. The 85s trim out much better. I can’t go longer - the 85s are about at my knees. Same with my 50s. I can get overfills here. I’d not have gotten the LPs otherwise.