The thing is you haven't got much alternative to Dell in terms of choice, price and reliability
Packard Bell are definitely rubbish as is anything PC-World connected.
IBM are good but they're really corporate-orientated and the choice is limited.
HP/Compaq are probably ok from my limited experience but I don't know about support.
Fujitsu - I only see broken ones being fixed under warranty. I get the suspicion that they have implemented a cost-cutting exercise which means they are very reluctant to send anyone out until the situation gets desperate, by which the cust has been on the phone for hours.
Mesh - I have heard good things about them and their site shows some impressive kit - but I don't anything about their support
Simply - build quality leaves to be desired from the handfull I have seen - monitors surprisingly good quality - support so so but I only spoke to them once or twice
Tiny/Time and the other cheapos
Sony - 50/50 for laptops from what I have heard - not sure about support
Mac I know nothing about 'xcept from the comments on this forum - not sure re support
Toshiba I like their range and the kit is good quality - haven't tried their support yet.
Acer - I know nothing about
So it's Dell - Mesh - MAC triangle.
I know, build your own!
Sorted, next question ?
Cheers
amofw