Behringer modules are good for beginners, and they're where I first started. The more you play you'll notice the differences in sounds of behringer products. Try to use the modulation and utilities stuff more in Behringer. For cheap oscilator modules and effects modules, there're lots of other options sounds better but only slightly expensive than behringer.
1010 sampler is good, but you might have to suffer from a lot of menu diving to use the details. Doesn't mean that it's not good, just a gentle reminder if you really care about this.
I'd recommend the new Bastl Citadel series, for any use. It now has three firmware, covering synthesizer, effects, and sampler. Good for a supplement and if you 're bored with one function, you could' switch another one easily. It has built in cv, pattern generator and midi support that makes it a nice utility in the system too.