This may be sacrilege on here, but at my previous job I really enjoyed TFS. It's been awhile but the workflow felt a little more intuitive than git. And some of the merging features were nicer.
My ranking is Perforce > Git > TFS > SVN. I haven't used Mercurial. I like Perforce the best because of its clean UI, its explicit checkout mechanism (all files are read-only by default, and you have to check out anything before you can edit), the integration tool GUI, and the ability to cloud-save work without submitting it. TFS is nice because it has built-in code review, but the UI isn't nearly as clean as Perforce.
- Offline? Looks like you'll have to wait to make that change or any other change for that matter since you can't check out files if you're offline. When doing remote work this use to do my head in.
- TFS On Premise putting readonly locks on every file you have. Why? Great question. Made writing build scripts and their ilk much harder to accomplish.
- Want to make a branch? That'll be an entire copy of the source code times however many branches you want
I find TFS the slowest of the lot, by quite a large margin.