Are you aware of the fact the ATR2500 is a dynamic microphone and the Samson Meteor is a condensor microphone? There's a significant difference, so be sure of what you want or need.
If you buy the ATR2500 you can not use the pop filter. Dynamic mics are build for close range. Instead you should put a think layer of foam around the mic to prevent popping. ((Old) socks will do just as well) The advantage of recording at close range is you record little to nothing of the environment sound, which is ideal for on stage or at home. I see a lot of people who use a condensor microphone at home because they think their home situation is as ideal a studio which it isn't. A living room or bedroom hasn't got the right acoustics, because of paralel walls. Also there are a lot of noises eg from a computer, heating, traffic or wheather outside, neighbours etc. Often a dynamic microphone is better for home use.
A condensor mic should be used at longer range. If you work in a sound-proof environment with correct accousitcs this is ideal. Because of the longer distance this mic suffers less from pops so you don't need the foam (or socks). If you place the mic in the right angle you won't even need a pop filter. All in all a condensor mic gives you more natural sounding less deformed recordings. The longer range also allows you te record resonance of the chest or head of the speaker which gives a more natural and characteristic sound. A condensor mic aslo picks up more of the room reverb, but beware this may not always be desired. A condensor mic records more of the environment sounds so it's usually not ideal for home use, though there are several ways to counter this, like placing the mic in a soundproof casing.
Before you buy a pop filter you may want to try your microphone to see if you really need it. Also you can create your own pop filters for little to no money.
Also you're looking for a usb mic. That's the cheapest option. But also consider XLR mics, which are more versitile. You'll have to plug it into an audio interface you have to connenct to your computer. All in all it's more expensive, but a nice investment if you want to expand.