I have been to the vast majority of these sites, If your looking for an easy first dive the blue grotto is recommended, easy entry and an easy dive .. the devils den has a number of swim throughs, blue springs make life hard because you have to tote all your dive equipment several hundred yards to the entry point. Alexander springs is really not worth a dive all it really is is a pit that bottoms out at about 22 feet. I haven’t done Ginny Springs Or Manatee springs yet so cant comment. I am available basically only on Sundays, so if you want to take the plunge on a sunday let me know and we can meet for a dive.