Choose this one because it is multi-colored and the beads are oval rather than chips.  When it came it looked just like the picture and the beads are long and flat - which is great for it to sit on my daughter's skin nicely and not poke her.  We have had it for a week and 5 of the last 7 nights my 8 month old daughter has slept over 10 hours each night!  This has not happened in months!!  She hasn't even needed the pacifier two of those nights went to asleep without it and did not wake up once looking for it.  I love this thing and it only comes off when she is getting a bath - otherwise it is just tucked under her shirt and she does not mess with it at all.  Would DEFINITELY recommend for others that their babies are in teething pain as well.