Just recieved these about 15mins ago, and they apear gd. Takes a while to get used to the markings as they are rather small, but clearly you dont want them to obvious., ive been practising reading the marks and you soon pick it up, just depends how long it takes you to learn wot different marks mean. Im yet to try them out at m8s 18th birthday party(which is why i bought them) but as long as i can see the markings from across the table, i should win.
Overall they appear to be good quality cards, and can be used for any card game, even if u don't want to cheat. I can't see anybody working out that thier marked, so you shoudl be safe. They may get a 5* review, if i manage to win the poker ina weeks time.
*After the Poker Game-
Unfortunately i didnt win the game, but i think thats more down to my bad luck with the cards delt and my playing. It ws impossible to read my mates cards across the table, but was ok for the two next to me. Got a gd laugh when i told them they were marked, and even after they looked at them carefuly they still could not see the markings, so you've got no worries thier.
In conclusion, i wouldnt suggest relying on these to win you a game, especially if you gonna play for money, but thier great for joke between mates, or if u want to do some magic tricks.