Best AI program for FSX

Hey everyone, so I am finally planning on upgrading to FSX when I get a new desktop soon. Plan on getting an i7 processor decent video card etc.. So I plan on having FSX working nice and fast. My question is I am looking for the best AI traffic program but here is the key. I like being able to create my own flight plans, add other aircraft into the program, and also add my VA airline into FSX AI traffic. It it is very easy to do this with Traffic 2004 which is what AI program I have running for FS9 right now, I love how easy it is to add lots of traffic and how easy it is to add any airplane I want to my AI world. I was wondering if Traffic X is like that? I know UT2 has more airlines and realistic schedules but I have heard it is more difficult to add a whole other major airline to the AI world and edit the flight plans. How about my traffic? I have heard with MY traffic there is no realism you can see a UA ERJ at a air force base etc.. So thats why I think Traffic X will be a good medium? Thanks for the advice everyone.