I've made a post or two about this but its been a while since I bragged.
I have the 5300's and I love them. I too am looking for good gaming sound but dont want to enter the audiophile realm of thousand dollar Home Theater setups.
Have to say that the Z-5300e's are now an AWESOME deal for the money. Excellent sound quality (for a non-audiophile) good power and a very reasonable price.
You will not find anything close the power and quality provided for that kind of money.
If you think you might be an audiophile the go ahead and splurge for the Logitech 5500's or the Klipsch 5.1 Ultra. Though I am wondering if Astralite is putting me on. I doubt you can get them for a mere 200 bucks. But if he's right I may have to do a little shopping.
Anyway, the only thing lacking in the 5300's is digital decoding, but if you want them for games it doesnt matter.
However, if you live in a small apartment or dormitory and want something low-powered, the X530's are really good for a weak 5.1 setup. You are unlikely to find a comparable low-end surround system.