This is my leg work out right now, because i have bad knee crepitus and that stuff I am on is drying me out for my show coming up, but I do a DTP work out, that is working great.
I start off with one 45 on each side and go up each set depending on how I feel I have finished with a 1000lb leg press one day and another lighter. Just move up weight as you feel comfortable. But I keep it light to start with to warm up my knees.
Now this is also super setted with straight leg dead lifts. I do not do this DTP just 10 reps any higher I will pass out. I just keep it with 135 no reason to go heavier.
30, 20, 15 10, failue, failure, 10, 15, 20, 30,
Then I go to leg ext.
max out the weight for 7 reps and decrease it by 20lbs until i hit failure and I do that for 3 sets
then I do the same thing for leg curls
Then I go to abductor and adductor machines (ones the girls use) and I do 3 sets of 20 with it racked out. My legs have developed so much more after adding this in.
Then I go to a machine leg press and focus light weight one legged leg press. i dont go all the way ext to keep more tension on my quads, I hit this for 3 - 4 sets.
Then I go back to the leg ext and go light weight 20 reps and only do the last 15- 20% of the extesion to really focus on the tear drop of the quad (that is my weak point in my quads)
But this helped me get my legs to around 27 inches. They might be slightly smaller now because I am cutting, but got them to 27.5 when bulking.