In a mixed enviroment (Lazarus/Delphi) your best choice is ZEOS. If you only support Lazarus the sqlDB are so good and stable as ZEOS. The different between SqlDB and ZEOS is not so great on the first sight, BUT important. IMHO, you cannot easy change from ZEOS to SqlDB or other direction with only redefining the Components. The small details makes a great diffence.
Reporting COmponents in Lazarus are more centered to SqlDB not on ZEOS. If you work with report check this.
The community of ZEOS is still active and it is supported. I have seen this last year :-) Thank to the guys of ZEOS :-) The documentation found by GAN are the completest. The ZEOS Forum is still active.
But a lot of dead links are found in the internet, becaus a great knowledgebase was gone some years ago :-(
Andreas