Alphabet and Adobe have been crushing it recently. Nvidia (NVDA -3.22%) is a great artificial intelligence (AI) stock. However, it has gotten a bit expensive from a valuation standpoint, which has some investors looking elsewhere for AI investments. I'm in that camp, but fortunately, plenty of AI companies are worth buying right now. Two that come to mind are Alphabet (GOOG 1.44%) (GOOGL 1.89%) and Adobe (ADBE 2.01%). Both companies' shares are trading at reasonable valuations, and both are always fantastic ...