Excellent for the price
I bought these mikes specifically for use as drum overheads. I have used them in an XY, and AB spaced position, as well as using the Recorderman technique - see the end of this review for a brief explanation.
The mics are well made, and feel solid. They provide a three-position switch for flat, low-pass or -10dB pad response. The -10dB pad is particularly useful for miking loud percussive instruments such as a drum kit. The cardiod response is good for minimising off-axis response, which is useful if your recording space is less than stellar or too boxy.
They have proven solid and reliable performers. Their response time is good which makes them very well suited for percussive instruments. Frequency wise, they have a good response which is not over-hyped at the high-end like some other cheap mikes. Noise hasn't been an issue. Stereo wise, they provide a solid,coherent image which I find particularly appealing.
My favoured setup is Recorderman overhead drum mic technique. Basically one of the mikes is placed directly above the centre of the snare drum about two drum sticks in height. The other one is placed roughly above the drummer's shoulder, on the floor tome side, also pointing towards the centre of the snare, at an equal distance. This provides a balanced sound for the entire kit, without too much room sound. You can vary the position of the second mike to get more/less volume from the bass drum.
Excellent value, and a bargain at the price. I would certainly buy them again.