hyd. lifters

anybody use the howards max effort lifters??? i have not used a hyd. cam in so many years and i see there are so many types of hyd. lifters out now.. summit ,jegs,comp cam has 2/3 diff. kinds...this will be in my 400 with a crane cam 504/528 lift ...i started to just order the summit lifters and be done , but fig. i would ask and see what most use and work..i seee the howards arefor more hi revs..thanks mike :sign5: