First up, lets separate two things, there's Editing programs, and there's video post processing programs.
Editing, is apps like Final Cut, Premiere, Edius (my choice), Vegas and the like.
Post Processing, is programs like Resolve, for doing colour correction and conversion from the recorded CoDec to an Editing CoDec (such as ProRes, DNxHD or GrassValley HQX ).
You can do basic editing and transcoding in applications as simple as VirtualDub, it can be very efficient at compressing to Mpeg4/Xvid/x.264 for upload.
When it comes to editing, In my experience, Final Cut is okay if you've got a month to deliver, Premiere if you've got a week, and Edius if it needs to be on air tonight.
Premiere is now limited to the online licensing and the not secure Creative Cloud.
FCP-X is okay for the Apple folk, but there are still a lot of features missing since they dropped FCP-7.
Lightworks is a real alternative, especially if you're a Linux savvy tech head. It also has a free version, and appears to be pretty powerful, on current spec PC's.
A lot of the major players allow download of a 30-day trial version, I know for sure that GV does for Edius.
My reasons for using Edius - it's always stable, it uses standardized plug-ins, it will open pretty much every type of camera's video files - the only flies I haven't had it able to use is Youtube .FLV's - and it's a 'real time' editing app, so long as your system has enough processing grunt for the type of work you're doing.
That last point means it's fast, you can play out live from the timeline if you need to, you can render if you want, or play once to let your system create the temp files as it goes.
And the interface makes sense to me - Canopus and Grass Valley haven't done any radical changes, they evolve the interface slowly so that users don't have to deal with massive changes between versions. Beneath the skin, they make continual updates, adding features that are really useful. Usually, when I see a press release for FCP or Premiere, my usual reaction is 'really, Edius has had that for 3 or 4 versions,...'
Now, as for Post Processing, Resolve is considered top of the heap. It works particularly well with Prem, FCP, and now Edius, in taking care of the colour correction, letting the editors keep working on the story telling, while the DoP can tweak the grading until everyones happy.
I did see ( I think Kadajawi ? ) a post on how to get Adobe Lightroom to create colour correction profiles that could be applied to video footage, so it's an option too.
There are filters for doing colour correction and noise reduction in VirtualDub, they're a bit clunky, but the do work, and if your budget is $0, it's a place to start.
Oddly enough, the types of plug-in formats that work in Edius and Premiere, also work in VirtualDub
Choice of NLE and Colour Correction application is as much a personal choice as what camera you bought is.
There is no right or wrong choice, only tools that either work for you, or don't, depending on the way you assemble the story telling ideas in your head.