Hi. There's a lot of great models out there for beginners, I can imagine you being just as confused as I would be if I had to buy a trombone(the confusion does not bear thinking about).
Yamaha at the moment are doing a really good student range of clarinets. The YCL250SUK is an excellent beginner model as is it's relative the YCL-450S, the intermediate model.
We use them in the schools I teach in and they are great for kids. The 250 being the basic model and the 450 the intermediate model.
Two of many out there, good luck