There are pros and cons to both scenarios. The way I see it, think in the long-term.
My roommate got the air-force scholarship (similar to navy), and he says they will pay him about $60K plus benefits each year when gets out. They are also paying for his 4 yrs tuition and fees, and are throwing in a monthly stipend of ~$1,500 (more than the little bugger needs) throughout his DMD training. Sp they invested about $270k in him to join them as an officer/dentist, so he could earn $240k of income over the 4 years he is committed to serve. Most people don't realize something else, it's not exactly 4 years, I don't know what they call it, but there could be additional years where he is required to serve if they REALLY need him (look it up!).
For me, I only pay for tuition and fees through federal direct loans, my living costs (which is about $1k a month) is paid by my family (I understand not everyone has this option). Ultimately, I anticipate to end up with $200K debt. When I start to associate, and I average $125k a year for the first four years after school, that's a total of $500k income (this is a very fair number and is based on if I don't work more hours than I have to!). Will I be able to payback my loans during that time? sure, I still have about $75k/yr to live on each of those 4 years (which is little more that what the military is paying for my roommate).
So, weigh your options and then decide which route fits your circumstances!
p.s. all the numbers I mentioned are based on taxable income.