I'm with cnewshadow on this one.
The snare head you put on was probably not tightened properly and tuned to the correct values, making it loose so your technique suffered.
(maybe you kept it loose to be "deeper" sounding for that "metal" power snare sound...Those are actually very large snare drums that are very deep in size.)
Also tuning is very important and you tune BOTH top and bottom heads.
( I believe..don't quote me.... that you can even use a guitar tuner to get a certain pitch form the drums and the drum will actually register as a note.) Drums are often tuned in 4ths. I suppose it depends on what you want. That is just an example.
http://www.pearldrummersforum.com/showthread.php?195170-Drum-Tuning-Notes-Pitches-Intervals
Google how to tune drums...there are buttloads of links and advice.
As for brands, like cnews said, they are all pretty similar. There are all kinds of heads. single play , dual ply, oil filled hydraulic heads...Gaahhhh!
http://www.moderndrummer.com/site/2011/10/what-you-need-to-know-about-drumheads/#.Uwj9nmJdWSo
I used to just tune my drums to pleasing drops in intervals, so they sounded like they were in good relative pitch to each other.
I was thinking just now how I tuned mine (only snare, one ride tom one floor tom.)
I'm thinking those 3 drums were kind of tuned to "three blind mice"