Hey SS,
I've flight tested the 900's and 800's in VARIOUS configurations on numerous occassions,besides training on both.And of course company SOP's notwithstanding,i've found that a gentle mix between unlock detent and second detent modulated back to idle by about 60kts,works well for me more than 90% of the times.Thats also what I teach online and in sims.
Having said that,if u landing on a 2.5 mile strip,no need for more than idle/Mlw on a 1 mile strip,i'd use max reverser!
My 2(or less)cents worth.....