Which one of these cases would be best for my Nikon D3100?

I was looking online, and I found these seemingly really great cases. I just want to know which one you think would best. I have a Nikon D3100. All i need a case to hold would be a couple of memory cards, my Nikon D3100 with the lens that it came with, and a remote shutter release One of my concerns is will my camera and everything fit in it properly. I'll be using the case for general use, and I will be taking it with me to Europe with my school, and I already have a small-ish backpack i will use for all my personal items. I don't want to spend more than $45 before tax on a bag.

1.http://www.bhphotovideo.com/c/product/572723-REG/Pearstone_OSC_1040B_Onyx_1040_Digital_Camera_Camcorder.html

2.http://www.bhphotovideo.com/c/product/544639-REG/Tamrac_523101_5231_T_31_Photo_Digital_Video_Bag.html

3.http://www.bhphotovideo.com/c/product/492589-REG/Mountainsmith_05_81003_01_Focus_II_Gear_Pouch.html

4.http://www.bhphotovideo.com/c/product/572723-REG/Pearstone_OSC_1040B_Onyx_1040_Digital_Camera_Camcorder.html

And if anyone has any cases they would like to recommend, that would be awesome! Since ill be walking around all day, I also DO NOT want one without pads on the shoulders.

Added (1). Oh, and It has to be super easy and quick to take the camera out of the bag.

I own a Tamrac bag - very well made, soft for storage, great for transporting to shoots. I highly recommend the brand.

I don't keep my dSLR in a bag. It's either at home inside an airtight box or hanging around my neck, already on, and ready to shoot.