Decent budget small diaphgram microphones

I bought those as a backup for my different set of small condenser mics that I use to mic up drums and occasionally to track some ambient sounds, violins and acoustic guitars and they work fairly good from drums but they don't sound that great for use with instruments that require to pickup tiny characteristics and pure tones of string instruments. Decent built quality and they also have a built in high pass filter and -10 db level reduction switch which are a nice additions but the sound I would describe as pretty thin and not really suitable for tracking other instruments than drum cymbals, etc, but then there is their price and you can't really ask for more from these.