What is the best way to deposit money on mtgox with a 1:1 ratio and also it would be instant?
I am skeptical to do trades on forums unless it is with highly reputable/commercial members. I think we all are.
I will update this thread when i find a way to put $ on mtgox at a 1:1 ratio. I feel like not getting a 1:1 ratio for USD is unreasonable considering trades are raked .65%.
It doesn't completely answer your question (I think the answer may be that it's not possible, due to fees charged by Liberty Reserve, but it's not something I've ever needed to do) but...
What about buying bitcoins over-the-counter, using
bitcoin-otc? That way you negotiate a price you're happy with, there's the Web of Trust tool to assess how trustworthy the counter-party is, and the only fees are any bank charges - there's no 0.65% trading fee.
If you're interested in speculating on MtGox (or any other exchange), once you've bought your bitcoins you could deposit them at the exchange (which is, IIRC, fee-free at MtGox) then speculate away! When it comes to cashing out, simply withdraw your bitcoins to your own bitcoin address, and sell them using bitcoin-otc.