Well, I have some experience with Larry's material...
I was a subscriber to several of his various hotlines for a 1 year period. Overall, his calls did not produce profit for me for that year after costs were figured in. About half the trades were profitable, but often these were 'held' with a trailing stop that eventually gave back much of the initial profit. The other half were outright stopped out for losses in the 500 - 700 per contract range.
Several others I know were using only his S&P calls on his morning hotlines and did fairly ok with them. A greater number of losers offset by some very nice winning 1 and 2 day trades.
I attended one of his "Million Dollar Challenge" seminars, and I will say this: They are for real. He traded live, placing orders right there for all of us to see and hear, we watched the profit/loss. We watched the entry and exit techniques, and yes, we walked away with a profit, recovering the cost of the seminar, and in my case the cost of the travel and lodging etc. We got a pretty nice dinner out of it too, which won't help your trading any.
I suppose it is a testament to something, perhaps simply that my style of trading didn't fit well with his, that I no longer subsribe to any of his services. Had I to do it over again, I'd rather have found other information sooner that fit my style as a person and trader more closely. A lot of the problem was that I didn't know me as well at that time. But I did learn a lot of interesting techniques from him, one or two of which I do employ in a modified way today.
He makes a lot of his money from seminars and so on, and yes, he freely admits it. I don't know whether he cheated on this or that contest etc. I don't know whether he trades daily in his own accounts on a regular basis. I do know that he's a real guy, he backs up his methods at least sometimes at the MDChallenges, he's extremely bright, and let's face it, he makes a very good living.
I think depending on what your goals are, what markets you want to trade, and what you already know, you can do worse than studying his material. If you have any hardcore questions about my experiences, shoot me a PM and I'll see what I can add.
----Tacs
PS If having critics is an indication of success, some people on ET must be Trading Gods. I thought all you had to do was post to get some critics.
PPS I'm not a subscriber to any of his services as I mentioned, nor am I affiliated with Mr. Williams in any way.