Out of these two mice
What would you rather use?
Logitech M525
DYNEX DX-WMSE
What would you rather use?
Logitech M525
DYNEX DX-WMSE
Neither?
First, you don't really want a wireless mouse to play, unless you are on a laptop on the go all the time.
Second, I've never heard of Dynex, so I can't give a very good view on it, but that alone should be a bit of a point to look at other mice.
If I may, what was it about those two mice that interested you? Price? And if so, could I perhaps have your price range, and I'll see what I can find
I'm not buying them. They are mice I've had. I'm wondering what I should use until I get a better one.
Laptop or desktop?
Laptop. But I don't move it around. It's pretty much a desktop.
More than likely the pricing and the fact that they are available at Walmart are what made the OP look to these mice.
Cheap mouse: http://www.newegg.com/Product/Product.aspx?Item=N82E16826193089
Mouse I have currently been using without issues: http://www.newegg.com/Product/Product.aspx?Item=N82E16826153168&cm_re=razer-_-26-153-168-_-Product
Gaming mice buyers guide: http://linustechtips.com/main/topic/272889-a-guide-to-buying-the-right-mouse/
To add to his post: if you're looking for an inexpensive but reliable gaming mouse, try the Logitech G302 Daedelus prime (or the G300S if you're left handed). Both mice go for about $40
If you want to put a bit more into your purchase, I personally recommend the Razer Naga, particularly if you plan on playing other MMOs (besides just MOBAs). If those aren't your type of game, then there's also the Razer Naga Hex, which is specifically made for MOBA gaming. Both the Naga and Naga Hex sell for $80