Hi Jeff
You are aware that there is significantly less music software available for the Mac, and what is available is usually more expensive.
Upgrading to new technologies also cost an arm and a leg on a Mac, but is relatively cheap on a PC.
If you use the Windows available on the Mac to run your programs, then you will be paying about 3 times the price of a PC for the same performance.
If you really hate Microsoft, why not try Linux (Windows emulation is also available) as it costs a fraction of the price of a Mac, and does pretty much the same.
If however you want something that looks the part, then a Mac is probably the better bet. (Personally I buy a computer to use and not to look at)
Another option

Bill