As a professor of Organic Chemistry I think that this models are good in a few regards:
* They do a very nice job of accurately showing conformation and shape of molecules * They are very easy to put together and pull apart * The construction is very well done
However, with this set of models it is nearly impossible to easily demonstrate cyclohexane ring flips. Short of breaking bonds and re-arranging atoms there isn't a good way to show the transformation from a chair arrangement to a boat back to the other chair arrangement. Thus, I prefer and recommend Hgs Molecular Structure Models: Organic Chemistry. The Hgs models are of solid construction and very easy to see ring flips and conformations. The only downside to those models is that they are more difficult to pull apart. But I would rather it be harder to pull apart and easier to see the chemistry. The other nice thing about the Hgs models is that you can get the 100 Fundamental Organic set from Aldrich for only $20. This set has less atoms and bonds, but still has enough for most molecules in an introductory organic class. At bulk you can get them for $17 each + shipping and handling. For class orders this is an inexpensive option for students and allows them to have their own model set.
Like any model set, neither can represent triple bonds, but to my knowledge there are very few model kits that can.