I would advise against trading options too for many reasons (why do you want to?). When you buy an option, you are paying a spread of course, and essentially if a bank was selling you that, they can hedge that option by just buying and selling the underlying so that they have no risk (there is also a hidden premium in the volatility, but not important for this argument). The two positions option and underlying are equivalent (delta-hedging). So any standard option position is the equivalent of a sequence of positions in the underlying. To actually make money with options, you still have to know either which direction it is moving, or you have to know how much/quickly it will move in a given time (or both!). If you can do this, surely you can make money just trading the underlying.
When you say "straddle strategy" do you mean an actual strategy you have using straddles or do you mean the straddle option? These options are quite standard, so there is no free lunch there. What analysis are you looking for? The formulas for pricing options are not that hard, the problem is the inputs, in particular volatility. There is a market implied vol, and there is a historical vol. The first is easy to find, the second has many methods for estimating. There is a possible opportunity to make money in options if someone has mispriced an option by having the wrong value for the volatility. This opportunity likely won't last too long because of arbitrageurs. Any analysis you try to do on this, is probably not going to match up to the pros. I don't believe you can gain an edge with options unless you already have an edge with the underlying stock/index.