DD_nVidia - Wine doesn't have a "hit" on photo/video apps. It's an interface, not an emulator. You would use it only if one of thousands of Linux applications doesn't do a particular process a Windows app does. And these days, such instances are few and far between.
As for a Windows 7 PC being cheapest and fastest.... On what could you be basing that claim?
Where I am, Windows 7 costs hundreds of dollars - I'm assuming you're not referring to Pirated versions....
Linux costs the User nothing - unless s/he wants to send their Distro a donation.
As for "fastest" - you've clearly never done the same tasks on identical hardware Windows and Linux PCs. Windows is an old-design "stack" system, in which every user input and command has to travel the 'height' of the stack, between kernel and the user-interface. Linux is a fully modular system, with very much faster input response and action.
With Linux, you can update System kernels with a few clicks of the Synaptic installer. You don't have to uninstall previous or alternative kernels. Or you can also install kernels with specific functions. You can still from the Desktop select and reboot between kernels. Don't try that with Windows...
Also - with Linux, up to the limit of assignable resources - you can run multiple tasks on different Desktops. That is significant, as applications on different Desktops connect independently to the System Call Layer.
That's the interface between the Users, and the System. This means that applications on different Desktops cannot conflict with or interfere with each other. In the rare event that an application freeezes or crashes on one Desktop - applications on other Desktops keep running normally, and you just deal with the problem application on its Desktop.
As Linux has very much lower overheads and is more efficient, the PC hardware doesn't have to be as expensive as a Windows build. I was a Windows tech (5 certificated plus updates to A+, etc) - for 11 years, designing and building PCs and Stations for different tasking and work purposes.
Using good industry standard components - a Linux PC with equal or better tasking performance to a Windows PC, will be 20-30% cheaper.
Over 11 years of Windows PC designing and building, now 9 years of so doing for Linux, I do know what performance for each costs.
And, "compatibilty" with what? When you have over 12,000 applications, tools, utilities, etc - all at no cost to the User - you'll find software to do anything - usually with several levels of ability / complexity - to suit User abilities and experience.
Linux is much faster and easier to install than any recent version of Windows, starts up faster, runs faster, and is easier to use.
Also - if you home-network - you can have User Logons on the Family or "main" PC - and Users on the other PCs can log on from their PC, and use apps, tools, utilities not on their PCs - or of course, log on and use, or transfer to their PCs, any data they have permissions to access - from information to music, graphics, videos, etc. (Linux User Logons are totally separated from each other.)
And - with Linux, you can do anything you need to, or want to - User1, with the root password, controls the System. The System does not control the User.
Incidentally - you might note that Linux had the new tools and applications to run Fuji's HS10 (and S200EXR, etc) RAF RAWs - over 2 months before the Adobe apps did. The Linux DNGconverter could convert RAFs to DNG nearly 3 months before Adobe's DNG Converter was updated - a couple of weeks back. Er - camera "compatibility"...?