Since you already have both, I will admit that you have a rather valid reason for growing both.
If I might ask, whose knockoff White Widow did you pick?
Lots of newer growers think the same way but I look at things a bit different. There are true quality strains out there from quality breeders and they are inexpensive because their names have some dust on them now and because they would only it into the medium-high potency range. But working with better genetics is better way to learn. I have known people, and read others online, who went lower dollar or went the knockoff route and ended up with hermies and other problems and drove themselves mad trying to figure out where they made some error or errors, when it was actually just the genetics they picked.
One strain I often suggest to someone new is Sensi Seeds Skunk #1. You can't find an easier strain to grow, it yields well, is in the medium-high range in potency, is stable and comes from a quality breeder. And if that's not enough it is inexpensive. Depending on if someone wanted feminized seeds or regular you can get five feminized seeds for roughly $32.00 and ten regular seeds for roughly ten dollars more.
Considering what you get for your money, you can't find a better value in that price range.