I have been doing a lot of lunges since April because I had a meniscus surgery and deep squatting still causes a lot of pain and swelling. Lunges are great because they still kill the legs but they limit the ROM to parallel, and it also ensures that each leg is doing equal work, which is especially important after surgery. I have grown to like them and will still do them once I get squat heavier again.
I have used mostly dumbells, but yesterday a guy in my gym suggested I try them Ronnie Coleman style with a barbell in the parking lot. I'd done them once before in the gym, but I was going back and forth across a room so I got breaks to turn around. This was fun. I recommend to these to anyone. While they kill the legs, they are also good for conditioning.
I got 155x47 steps (24 right/23 left)