I don't think you can pick which one is "best" out of LL, CD and LT as although they are all VLCD's, they are all quite different from my POV (if I'm wrong about LT and CD, I apologise, I have no experience of them so this is just what I've picked up from reading the posts on MM's).
LT seems to be soley about losing the weight you have gained; buy the packs, be abstinant, lose the weight.
CD seems to be a mix of losing the weight and (depending on you CDC) some mental guidance / changing habits etc as well
LL is about losing weight and re-training your mind when it comes to food through group therapy, abstinance, and a long & well-planned reintroduction food program (RTM).
Of course, everyone is going to be biased towards the one that works for them, and everyone will need a different level of support to lose the weight; some might have just had a bad year, gained some they want to lose, and decide that LT is enough for them, whereas others (like me) have a lifelong problem with food and need more than just over-the-counter packs, I need someone to talk to and help me change my life.
That's why I know that I will always favour LL above the others even though I have no experience of the others, as with a lifelong problem, the counselling and all the TA, CBT & lifestyle adjustments are exactly what I needed, I'm in no doubt that simply losing the weight would not have been enough for me to keep it off, I need to retrain my brain