Shrinkage of Threadless Shirts

Apologies, I know its been covered before, but I cant find the thread that its in.  If someone can point me to the right thread or humor me once again I appreciate it How much shrinkage can one expect with the Threadless Ts?  After checking the measurements on the website, and then some of my favorite t-s right now, I want to order a med or small, but have no clue how much they will shrink.   What scares me even more is that it seems that there are different shirt brands used for different prints, so does that mean that I should get a med in one, but a small in another??? Ohhh the woes and perils of online shopping K PS, I know there is some fit discussion in the other threadless thread , but I am looking at shrinkage in the wash.

Thanks Fuuma, but I think I need to order in the next couple of days to get them to my folks so they can carry them over for me.   I wonder if all Fruit of the Loom Ts are sized consistently... Poly Cotton shrinks less than straight cotton right? K

Thanks All, I think I am just going to pick up a couple of mediums for now. Proabably easier to shrink em than to stretch em. K