In the years that we have been breeding Doodles - we have had experience with both Labradoodles and Goldendoodles.
Our personal opinion is that we prefer the Goldendoodles because their coats are much more consistent from litter to litter. We also really like the soft, full, fluffy look of the F1 and F1b Goldendoodles vs. the harsher, sometimes wirey, "Terrier" look that some of the Labradoodles ended up with.
That is not to say that you cannot obtain a Labradoodle with this same look - but oftentimes it is achieved with the multi-generational Labradoodles which typically raises the cost quite a bit.
Most people looking for doodles are doing so because they wish to reduce or eliminate shedding in their home. In our experiences with both breeds our Goldendoodles were much more reliable in this area as well.
One thing that can be a benefit for some people with the Labradoodle is that they sometimes require less grooming because their coats may not be as long or as full, especially with the F1 generation.
The black dog in the picture above is an F1 Labradoodle and the cream colored dog on the right is an F1 Goldendoodle. These pictures show the difference in coat type in what we found with the two breeds.
There is absolutely nothing "Wrong" with the Labradoodle! They are a wonderful dog worth considering! But if you have allergy concerns - be careful because their coats can be more difficult to evaluate amongst some litters.
There are no true personality differences between the two doodle breeds. Temperament and disposition are really a matter of each individual puppy and the two parents that were bred together vs. the difference between the Goldendoodle or the Labradoodle.
It is all a matter of preference - but you should continue your search with the knowledge of how the two breeds can vary in order to be sure you find what you are really looking for!