alt Hacker News14B even at Q4 isn't realistic for coding on a single 12GB RTX 3060. Token speed is too slow. After all they are dense models. You aren't getting a good MoE model under 30B. You can do OCR, STT, TTS really well and for LLMs, good use cases are classification, summarization and extraction with <10B models.
Dual 3060s run 24B Q6 and 32B Q4 at ~15 tok/sec. That's fast enough to be usable.
Add a third one and you can run Qwen 3.5 27B Q6 with 128k ctx. For less than the price of a 3090.