From your two choices. I would recommend buying the Atomic brand. I own 3 sets of Atomic’s. Diving in warm waters it really doesn’t matter what brand you purchase. Even the cheapest regs will do the job. I would suggest the cheapest rental SubGear line made by ScubaPro. I find ScubaPro is tops for quality of thier parts, fit and finish. They go back together and tune up perfectly everytime. And ScubaPro will be a lot easier to sell used when the time comes.