I have previously been a member at Ballina and Mullumbimby and currently a member at Lismore.
Ballina is a nice course and the best nick of all 3. Can be quite windy but they have the $$ so is always nice to play.
Mullumbimby has no $$ at all but I really enjoy the course. Very flat and has a lot of drains going across the course in different places. Hardly any bunkers, some water and a mix of long and short par 3's (120m-180+m, wedge or 4iron). Over all worth a play IMO.
Lismore is very hilly and has some very uneven lies in spots because of almost moguls because of the land, you bounce around in a cart a fair bit at times...lol. Has some long par 4's (2 good hits) and some drivable par 5's Driver 3w or 5w depending on your length (Mostly 3 hits for most ppl) friendly people and the Pro is fantasic. Can be decieving a bit on some holes where unless you are used to the course you will find yourself a club short on approach. Lismore has just been cored so the greens are a bit...........yep.