I started my career at a consultancy and after working in a myriad of other types of companies I'm back at working in a consultancy. The trick to work on an IT consulting company is to find one with ex-engineers at management.

It's been a breath of fresh air when you can have management back you up when dealing with client's bullshit. TBH in some cases it's also less stressful because your value to the company can be calculated much easily based on how much you're assigned in a project, so it's given me a lot of "fuel" to renegotiate my contract several times.