Rooster,
In my opinion both Flitepro and RANT 2000 are good IR training tools. They are sort of complementary. I use both and I am convinced they saved me money in getting the IR.
I've been waiting 18 months for Jepp to update the database in Flitepro but they seem to have abandoned any further development or update. RANT is not only up to date, but you can update the navaids yourself if you wish.
The strengths of Flitepro are that you fly it with a Joystick which you can eventually get to acceptible sensitivity, but like a Frasca (Sim) its harder to fly than the real thing. I find that doing a complete flight with Flitepro helps get all the checks in the right places. The downside of Flitepro is that you have very little choice of instrument presentation.
The strengths of RANT are that you don't fly it like an aircraft but it flies perfectly. In other words, to turn onto a heading, you set the heading bug, then click on left or right turn, and it does a perfect rate-1 turn for you onto the bugged heading. This enables you to see how the proceedures should be flown and experiment with different intercept angles for example. RANT 2000 used to have a good website (probably still does) with a free download sample programme. Rant also exhibits ADF Dip and although its not very realistic its better than anything else for this dastardly difficult part of the IR. You can change the instruments and panels to anything you want in RANT.
In short, both are good and well worth the money. I would have hated to do the IR without them, and I use them both for regular practice.
They can each be bought for less than 1-hour on a Frasca. I'm still paying back the credit card companies for the IR, but I bought the software outright.