I personally use Sony Vegas and After effects. I moved on to Sony Vegas after using WMM for about a year and I found they're very similar. I could understand the Sony Vegas layout with out having to spend a lot of time watching tutorials simply because I could take what I learned from using WMM and apply it to Vegas. You have more control over editing your footage and audio with Vegas, and it comes quite decent VFX's that come with the default suit.
Using the Adobe Suit however (Premiere, After effects, Photoshop and all the rest) Is extremely powerful because they're interconnected, easily compatible with each other. After effects is without a doubt the most potent software for video editing, abundance of tutorials and plugins there's almost nothing you can't figure out to do through a simple Google search.
But it all depends on the videos you are making, I would personally recommend using Vegas.