What are some potential advantages of a stock acquisition over an asset acquisition?

In an asset acquisition, the firm must acquire 100% of the assets of the other firm, while in a stock acquisition, a firm may gain control by purchasing 50% or more of the voting stock. Also, in a stock acquisition, formal negotiations with the targets management can sometimes be avoided. Further, in a stock acquisition, there might be advantages in keeping the firms as separate legal entities such as for tax purposes.