These outstanding businesses can help you build lasting wealth.The best growth stocks deliver excellent value to their customers and handsome returns to their shareowners. Quality, convenience, and cost savings are often part of the formulas that enable these relentlessly expanding enterprises to increase their sales and profits at impressive rates over many years.To aid your search for these long-term winners, here are two top-tier growth stocks to consider buying today. Growth stock to buy No. 1: Costco W ...