I don't know if I qualify as hardcore, been using MS products since DOS 3.3, currently Win2KPro; Redhat Linux since 5.1., holding at 8.x. Have also worked with Solaris, SCO SysV, AIX, OpenBSD Unices and briefly with VMS.
Don't know what you want to do with either of 'em... So "where do you want to go today"?
Bottom line, as I see it, you'll have a greater depth knowledge of your system and software with Linux, out of necessity; but you will be limited in what you want to do. For example the Adobe product and GIMP are both wonderful programs, but I have been using the Adobe product for over a dozen years, I can make it do for me what I want, and I don't have to re-invent the wheel. Guess what? It "don't run" on Linux. Neither does my ISP support Linux. So guess where I turn first...
Despite the fact that Linux is *fun*, some of the window managers/themes look *damn* sexy,
But hey, my synthesizer and super-nifty sound board make my Win2K Pro box barf, so I have to keep a Win98SE machine around...
See, things could be worse.
Use both, what the hell, computers are cheap these days.
In my job, I frequently support user and guest machines running WinNT 4, and oh, how I wish there was some way to "su root" and do what I have to do without logging in and out and in and out...
Hope this helps,
jsaxe
"When the going gets weird, the weird turn pro."
Hunter S. Thompson (R.I.P. Doc)