Otherwise, once the setup and troubleshooting is done, is the hackintosh as stable as a mac?
For me, I think so. A simple "yes" answer will probably be not enough so here's my long answer.
You see, I "test drove" a hackintosh (my build#2 in sig) for 6 months, to see if it was going to be a lot of headaches and problems. My PowerPC was dying and I need to do something soon. Either buy a PowerMac or try this Hackintosh first. (I use my computer for serious business/work... I not only work at home, I am my own boss... so a usable computer is very very very VERY high priority for me. No computer = No work, no income.)
Before I buy a PowerMac, let me try this Hackintosh first. I had old PC parts laying around, and I only need a SATA DVD-RW (bought for $29). So I go for it. Since I have an Intel mobo, (which isn't supported on this site), I was on my own trying to get it to work. But I got it to work, and compared to other posts on this board, I would say even better than other's setup in terms of stability and upgradability using simple Software Updates.)
To cut a long story short... my workhorse PowerPC was breathing it's last breath (temps in the 90C, thermal shutdown, fans running full blast) a few days into my testing of my Build#2 hackintosh. I had no choice but to start copying data/mail/documents to my Hack, also started re-installing all programs I use (Photoshop/DW/Xcode/Parallels PC, etc...) into the Hack.
I used this old Intel mobo Hack for approx. 6 mos. (mid May - mid Nov) for serious production work. It was running so *stable* that I forgot that this is just a "test" and that my planned "Hackintosh" build is still unassembled. This test hack, made from spare parts laying around, was scoring geekbench=5600, almost 3X AS FAST as my old PowerMac dual 2.5! It's also 99% problem-free. I'm hooked!
Mind you, I already have all brand new, modern parts (except the cpu) just sitting on my shelf. I was just too lazy to finish building my real system because this hack was running stable. Finally, I said "either I re-sell all these brand new parts, or start building my new PC" and I devoted one weekend to this project.
I cloned my existing (and very stable) Hack setup to this new PC build... removed kexts I do not need, and started adding kexts I need for my particular hardware. Had some firewire issues after waking up, but fixed that. (on my test hack, wake up didn't even work so I didnt go to sleep.)
And now I'm kicking myself for not doing this new build sooner! This new 2600K machine screams fast! About 3x faster than my "test hack" and 7x faster than my PowerMac Dual 2.5! And yes, running very stable too -- even better than my first build... wake up from sleep works! hahaha.
My tip to you is: Once you have a working system, CLONE it to another hard drive. Keep cloned copies of your working system. *When* things go bad, (example: while testing a new fix, trying out something new, before a new Software Update upgrade, etc), it's a simple few minutes of restoration from your cloned drive. -- not several hours or days of re-installation. . - "work smarter" not harder
** of course this is just my personal experience. Your mileage may vary. But if you pick good, compatible parts, you should have a good stable, working system.