With the greatest respect, spending almost £5,000.00 on computers in two years only to see them 'crash and burn' is NOT a risk of computing life I expect to have to put up with.
All I can say is that you must be very unlucky man.
I know of one or two (thankfully rare !) examples of companies that have spent £50,000 on a single new server only to find that the RAID controller went AWOL and trashed all their data, plus data on recent backups.
happens in IT ......the manufacturers do their hardest to avoid it, but in the end, ever more complex electronics and ever more complex software just makes IT a risky proposition.
Anyhow, as I said, you must be a rare case ..... my personal mac zoo currently amounts to 8 machines .... plus I have regular exposure to them at work and elsewhere ..... I've also owned numerous Apples over the years and know of many other happy Apple users. Never had any major issues or even other issues that get anywhere near yours.
I'm not saying Apple are perfect, no company or individual is. However I think in this instance, your single handed "it happend to me therefore the company is rubbish and all the products they have ever manufacturered are rubbish" dismissal of Apple is somewhat unjustified, if not unscientific.