£750 is a helluva lot to pay for a home office fileserver - twice the cost of the Synology system, especially considering it will probably need additional external storage.
I would need to justify the investment in terms of the additional business benefits that would accrue from introducing MacOS to our business, and the benefits that the Mac Mini would provide over the £350 alternative.
My questions to the assembled Mac Gurus are:
1. If I buy this system with a server OS, could it equally be used for general purpose computing (ie like a MacOS client) ?
2. Have you any idea what benefits, beyond basic file-serving and web-hosting the server could bring to my network which would make a convincing argument for doubling the expenditure? All the machines on our network are Vista-era PCs.
Buy this car to drive to work. Drive to work to pay for this car.