Let's take a look at the three best large-cap communications equipment firms that TheStreet Quant Ratings has determined you should immediately add to your portfolio. These companies are brand-name stocks that are well entrenched in their respective markets and with the continued economic recovery, consumers should continue to spend on communications and entertainment, rewarding these firms. Number 3 is Harris. With an 'A-' rating, the company's solid stock price performance outweighs the fact it has had sub-par growth in net income. 2nd is, Ericsson. This rating is an 'A-.' Ericsson thrives in its largely solid financial position with reasonable debt levels by most measures and expanding profit margins. Number 1 is Cisco. With an 'A' rating the company flourishes in its revenue growth and notable return on equity. TheStreet Ratings are algorithmic stock picks based on 32 major data points. S&P 500 stocks rated 'buy' yielded a 16.5% return in 2014, beating the S&P 500 Total Return Index by more than 300 basis points. For the full reports on these stocks, you can check out TheStreet.com/QuantRatings