I like to look to weigh them both. I hate value traps and I hate paying up for go-go stocks. Why can't we all just get along? The momentum looks great, but what about the valuation? Data from Best Stocks Now App Good stocks generally do not come cheap. When they do, I am all over them. Considering the performance of this stock over the years, I don't get a great deal of heartburn paying 19.5 times forward EPS for a 19% grower. This works out to a PEG ratio of 1.03. Ok, I have satisfied the performance investor inside of me. I have also satisfied the value investor side. Now, what about all of the technicians out there? I also consider myself a technician. I look at hundreds of stock charts on a daily basis. I look at one-year stocks charts. Is the stock in a sideways trend, uptrend, topping out trend, or a downtrend? I like charts that are breaking out and possible in the early stages of a new uptrend. It really narrows the field down when you require performance, value, and a healthy stock chart. Let's see how the stock chart stacks up right now. That is a nice-looking stock chart. On Assignment currently has all of the qualities that I like in a stock. I only have 25-30 spots on my portfolio roster. I only want to own the best. On Assignment would definitely qualify as a candidate in an aggressive growth portfolio right now. Only the top 3%-4% of the almost 3,300 stocks that I track earns a grade of "A." On Assignment is one of those stocks right now. It is also in my top 100 at #76 currently. You know the drill, however. There are no guarantees in the stock market. All you can do is assemble the best ones that you can possibly find in your portfolio and monitor the heck out of them on a daily basis. To see what I consider the best aggressive growth stocks right now click here. Data from Best Stocks Now AppAt the time of publication clients of Gunderson Capital Management are long ASGN.Follow @pwstreetThis article was written by an independent contributor, separate from TheStreet's regular news coverage.