I have the carrot it's great. I would recommend not keeping it submerged for a very long time (like forgetting it's in your finds pouch when you go water hunting). Mine flooded this way, but garrett of course replaced it. For short submersions, a minute or two at a time, it's totally fine down to 10' or so.
If I lost my carrot, I'd replace it again without hesitation. It feels solid in the hand, well made, not cheap brittle plastic. The cap is solid, the button feels great and has given me no problems at all. The LED light is bright, but you can place your thumb over it if you are doing a ninja hunt. I wrapped a couple layers of electrical tape over the speaker grill so it's not quite as loud...you can place it in silent mode, but I prefer to hear it, just not so loud.