Kyle
"Bromine is a better sanitizer for hot water and works more efficiently in various pH ranges."
This is not quite right. Bromine and chlorine are both halogens, but chlorine is a lot more powerful as a sanitizer in the pH ranges that should be maintained in a hottub, i.e. ~7.4 - 7.8. Water in the temperature ranges normally found in hottubs will break down chlorine in a matter of only a few hours; whereas, bromine is not affected by these temperatures. The trade-off is that because chlorine is so much more effective as a sanitizer, the few hours it survives in hot water is adequate to kill all the bugs; whereas, bromine must be maintained at a residual of approximately 3-5 ppm at all times to control bacteria. So, the dichlor user usually sits in hot water with no or very low residual levels of chlorine, but the bromine user is always exposed to the chemical at concentrations sufficient to control bacteria. This can be a factor for people with sensitive skin.
One additional factor is that bromine is rapidly broken down when exposed to direct sunlight. Spas that are used during the daylight hours would be better served with dichlor for this reason.
Both approaches work, of course, and it is certainly not my intention to disparage your preference of the frog system. A lot of us are using dichlor with ozone and N2, however, and find this system better for our needs. Both systems are equally easy to use with a bit of experience. Happy tubbing.
Regards,
Bill