The remaining equipment will probably only become clear over time: As this pendant look in three-four years, I can not say, but after we use it only for occasional recreational use and not go every weekend 100km by bike, I think the design is intended precisely for this load on good cycle paths and so good withstand.
Who traveled the forest paths can cycle to (also) bad or narrow roads or want to purchase a sports equipment, must either turn to the more expensive manufacturers or smears, particularly with the suspension make, probably.
However, I think that only because you can vote with the chariot the suspension on the weight, for example, that does not work here. A direct comparison I can not offer.
Conclusion: The speedkid2 is definitely an inexpensive alternative to other bike trailers whose disadvantages for most users probably (as for me) not significant