What size digital picture prints the best 4x6 picture??

These are the sizes of pictures I can take with my didigtal camera!!
Small - 640x480
Medium 2 - 1024x768
Medium 1 - 1600x1200
Large - 2048x1536
So what size digital picture prints the best 4x6 picture??
Also what size would make the best 8x10 prints??
Thanks!!

Large - 2048x1536 for both sizes. The higher the resolution the better the pics--but for the 4x6 you probably won't be able to tell the difference between a photo shot at large or medium 1.

Large is the best size for 8x10's.

The higher the number the more pixels per square inch. 640x480 would give you a good wallet size only. By taking pictures at the higher numbers all the time if you happen to take a photo you decide you want to get an 8x10 or larger you have that option. The problem is the higher the number the less photos you can store on a memory card.
2048x1536 will give you about 244 photos on a 1 GB card.
I wouldn't go lower than 1600x1200 for 4x6 and 2048x1536 for 8x10.

The larger the size the better your shot will always be.

However it isnt always necessary if memory space is of concern. If your short on memory and you know you are not going to be printing an 8x10...dont feel the need to shoot the picture HUGE when something smaller would print a 4x6 just fine... then you'll have more room for more pictures! =)

Without redundant explanation, I agree with Bob.

Large - 2048x1536