I've used qwen but not in the way you mentioned. How big is the qwen model you run, 8B? would also love to know the context window you use, as sometimes the models go out of context...
Windsurf seems good to me too, Cursor sometimes generates the wrong code and when repromted to fix it does not always do a great job. But again, it really depends on the what type of project you are using it for :)
Don't think so, as long as you give a quick read to the code that is being generated and you're using it as an assistant I think they're really helpful.
Also, I'm having a hard time picking and sticking to one or few tools given the variety and multiple releases happening in the market.