Qwopus 9B v3 , Omnicoder 9B , Qwen3.5 9B

Which of these should I use for agentic environment, openclaw or agent zero.....
which is better ?

I have 16GB unified memory (M4 chip)

or should I go fro Gemma 4 series (E4B)?, but I don't think it's better for tool use