Hughes hyd roller lifters

Anyone using or familiar with these?

I guess they have a lowered oil band to help with oil control in LA blocks. Any idea what the "general" MAX lift is with these and others b4 you need a custom ground cam w/ a smaller base circle? I dont plan on lift higher than .525.

Any idea as to how long they've been on the market or who makes em?
How do they compare to crower, lunati, comp, crane in terms of quality/weight/geometry(lenght)/stability/ease of instillation/ect?

Thanks :)