My experience with Dr. Brooks has been extremely positive, he uses the BHR device. He closely follows the protocol of Treacy and McMinn, with whom he trained, including the post operative exercises and restrictions going out for one year, 75% weight bearing/crutches for 6 weeks, and no running, strengthening or high impact for 12 months. Year one is for ROM only. The care at the Cleveland Clinic was incredible as well.
Both of my incisions look like long scratches, are incredibly thin lines; I offer that not as a cosmetic benefit, but to exemplify his surgical skill.
If you are one of the high horsepower people who want to run and do high impact things before a year, he's probably not the guy for you, he's had extremely few adverse complications in over 1300 done (see his interview on this site from spring of 2011 with Pat), and he is very adamant about people following the program, and not putting themselves in risk of a revision surgery. He explains in great detail the history, pros and cons of various approaches (THR vs BHR) and will show you, on your x-rays, what a THR revision would involve, and a revision of a revision, so he explains in graphic detial why you would not want to screw around not following the post-op restrictions, which was very scary and helpful.
I've met a couple world-class medical people in my life, he's completely world class in all aspects. He's also a no BS kind of guy, and will tell you like it is.
I do not know Dr Gross, so I can't comment.
Thanks