What is the best server hardware vendor do you prefer? and why?

Dell

depends on your needs, but I think Dell is the best

1- IBM Servers

2- HP

3- DELL

HP is the best for tower, rack and blade servers

From my experience, hp is the best!

For its quality and support.

hp prices are high but acceptable when rated with its quality and features.

Dell Tower servers are always the Best Choice.

Finally it  depents on your regional area , In KSA I think that HP  is most favoured .

HP is the best  for quality & long life

HP is really perfect in PC & printers also not only servers

Ahmed Mousa

IT Manger

There is no such vendor who can be said best every one is strong in some geographical locations.

I personally believe IBM and DELL.

Depend on where are you, the most important part is support services, in your area which manfacturer is presented better, for example in UAE DELL & HP are the first choice, JORDAN definitly HP, KSA HP as i heard.. 

look at the support the hardware itself is very similar, in Egypt HP is great.