12-Step Program
The bottom line on mic selection depends on three things: your space, your voice, and the desired presentation.
Don LaFontaine can probably make a crystal mic sound good - especially coming through the 4" stereo speakers of most home TV sets...
If a 416 responds well to your voice, it's pattern helps you control noise in your studio space. Keep the noise out of the mic's pattern, and you can get away with a lot more noise than you can with a ribbon omni.
If you have a very quiet space, or even a space with a little natural reverb, an omni with a big diaphragm like a Neumann might give you even more warmth.
You also need to decide what you want for a particular session - the broad warmth of an omni, or the focused cut-through capability of a shotgun condenser.
You may be pleasantly surprised to find that a $100.00 Marshall works well with your voice, your space, and your delivery for some presentations. Or, it may sound like crap. There have been a lot of mics talked about on this thread, but the only way to really determine what works best for you in your space is to try them.
If you can find a seller who'll let you test & compare mics in your space, you may find one mic that fits your voice and your budget, or it make take multiple mics, depending on the type of delivery for a particular spot. That seller may cost you a little more for a particular model, but that's a lot cheaper than buying the wrong mic, reselling it, and trying something new.
There are suppliers out there who'll let you try a demo if you put down a deposit - which is why you have mic junkies like Mr. Laurence, Emmett, and others. Just be careful, or you'll be in the 12-step program, introducing yourself with "My name is (state your name), and I'm a micaholic."