Just make sure you factor in the trade-offs for each type of station. I detailed why tablets/laptops are a poor choice for staff in this post: http://amazingcharts.com/ub/ubbthreads.php/topics/60932/Re_Chromebook#Post60932

It's more appropriate to use what is best for the situation rather than all tablets or all desktops. Make sure you have sufficient screen real estate to get your tasks accomplished. If you can give us a better idea of your workflow, we can make a better recommendation.

I would talk to JBS, DocGene, or ryanjo about Dragon since they use it on a regular basis. The majority of the reluctance to use Dragon is that they charge significantly more for the Medical version. The medical version adds little functionality and you are essentially paying to remove the EMR Restriction they implemented in later versions. $100 for the Premium and then almost $2000 for the Medical.