Pros
I've worked in several consultancies large and small in the past and D+I is definitely one of the best. D+I had a big re-vamp several years ago, and is probably very different now compared to 10 years ago when a lot of the reviews were written. Lots of senior designers and engineers to learn from. Great variety of projects to work on. Quality of work is industry leading. Flexible hours. Great office environment, recently renovated. Excellent pay structure. You get paid hourly so get paid for any overtime - unheard of in most industrial design consultancies. Pay is better than other similar companies. Friendly and very talented staff. Great (and D+I unique) project management softwares saves considerable time and allows you to focus more on what matters - design work. Regular BBQs and friday drinks / food.
Kontras
Most of the cons with D+I are typical of design consultancies and hard to get away from if you want to be a part of the design consultancy world. Design consultancy can be a difficult game and if this is the first consultancy you work in then it may seem that the 'grass is greener' elsewhere. Your success will depend on how well you manage your clients. If you struggle to manage clients well then you will have an uncomfortable time. D+I does expect a lot of autonomy from its employees and you have to be able to hold your own. It may be a steep learning curve for those with less than 5 years experience. There will always be time and budget constraints in consultancy which will frustrate you at times.