问题1: 哪家的数据质量好?大家用的情况咋样? 问题2: kinetick Fast网站说:unfiltered streaming real time quotes View up to 100 symbols (upgrade available) Historical tick, minute and EOD data 500 plus market metrics including TICK & TRIN Real time news from RTT News, PR Newswire & Business Wire 17 plus fields of fundamental data 我想问提供历史tick跟 提供秒是不是一回事?