different mics different uses
I own different mics for different purposes: for skype I use a Logitech USB desktop mic, which is great for its noise reduction and flat pickup, or a simple earphone/mic combo that came with a logitech camera I bought some years ago. But that's simple telephone use. For music, vocals and podcasting I started 2.5 years ago with a Samson C03U USB condenser mic... but as most condenser mics it's very sensitive, and has a strong proximity effect, so it requires a clean microphone technique, so I use it now for simple acoustic instruments or table omnidirectional recordings. About 1 year ago I purshased a Rode Podcaster (dynamic) which offers the advantage of built-in monitoring (this is great specially for starting podcasters). This one is the best USB vocal mic for its simple use and travel convenience. In my home studio I've invested a bit more through time and got better equipment, plus the actual need of using 2 or more mics for vocals, instruments or interviews: a firewire interface (I recommend Apogee and Presonus), and different mics (all XLR): Shure SM58, Shure Beta58A, 87A for vocals , Shure SM7B & Heil PR40 for voice over/podcasts (different voices work better with different mics, Electrovoice RE20 is also very popular).... and a Rode K-2 for acoustics.... But my advice to you is to assess your needs in terms of source kind and needed quality... just consider that the microphone is the beginning of the recording chain, so it's better to spend a little more money to get cleaner input: then you can process it all you want with more flexibility. If you consider a voice processor, I recommend the Aphex 230 - it's the greatest for single vocals. If you are starting in podcasting, a Rode Podcaster USB is the best choice in my opinion: then you can invest in more complex eq from there, but the Rode USB will always come in handy. Good luck!