It is my general opinion that investing in high-quality dividend stocks with the potential for growth is the best path to stock market wealth. However, not all dividend stocks are the same. Here are two in particular -- one real estate investment trust, or REIT, and one bank -- that could be excellent additions to your portfolio as we head into 2017.

Image Source: Getty Images.

Steady income and big growth potential

Data center REIT Digital Realty Trust (DLR 3.25%) could be an excellent combination of dividends and growth for your portfolio.

As of this writing, Digital Realty owns 144 data center properties consisting of 25 million rentable square feet. While the space is leased to more than 2,000 individual tenants, the company's 20 largest tenants make up more than 42% of the rental income, and are essentially a "who's who" of major tech and financial firms. Just to name a few of the largest, the tenant roster includes IBM, AT&T, Facebook, and JPMorgan Chase.

The reasons to love Digital Realty are simple. Mainly, the data storage industry has grown tremendously, and continues to do so. According to projections by Cisco, global IP traffic is expected to grow by 91% from 2016 to 2019, and mobile data traffic is expected to grow even faster. To further support this, demand is growing much faster than supply of new data centers in many key markets. For example, in the Chicago metropolitan area, market absorption is three times the rate of new data center construction, and Digital Realty's new properties from the last 12 months are already 100% leased.

Image Source: Digital Realty Trust

Because of this growth, Digital Realty has grown its FFO per share at a 13.1% annualized rate, including strong growth during the great recession. As a result, its dividend (which only represents 62% of its 2016 core FFO) has more than tripled in that time. With a strong balance sheet and high occupancy levels, there's no reason to believe the company won't continue its market-beating performance in the coming years.

The worst performing bank of 2016

Despite the financial sector rising 20% in 2016, New York Community Bancorp (NYCB -3.20%) fell by about 3%, making it the worst-performing big U.S. bank stock of the year.

NYCB Chart

NYCB data by YCharts

However, the bank's business is completely fine. It's still the leader in its niche market of lending on rent-controlled apartment buildings in New York City. The reason for the poor performance? Well, at first, investors weren't thrilled about the proposed merger with Astoria Financial, as it would not only push NYCB over the $50 billion regulatory threshold, but was sure to compromise the bank's efficiency and asset quality -- its key competitive advantages. And, the merger meant that the bank was sure to cut its high dividend.

Then, in December, the merger agreement was surprisingly called off. I was delighted by this news -- after all, as a shareholder myself, I like New York Community Bancorp just the way it is. The market apparently disagreed, as the bank gave up all of its "Trump rally" gains in the latter weeks of the year.

It's understandable that the uncertainty caused by these developments would worry investors, but I look at this as a major buying opportunity for a bank that has one of the most rock-solid business models in the industry, not to mention a generous 4.2% dividend yield.

Invest for the long term

To be perfectly clear, I'm suggesting both of these as long-term investments. Over shorter periods of time (say, five years or less), investors are better off looking elsewhere. For example, while rising interest rates in the coming years could be great for NYCB, they could potentially be terrible for Digital Realty's stock price. Similarly, a recession could send the entire banking sector lower, even if it doesn't have much to do with the health of the banking sector, or NYCB in particular.

The point is that both stocks have some major risk factors, but most of them apply to the short-term. Over the long run, these companies both have winning business models that should produce excellent returns for shareholders, as they have in the past.