Have you stopped and really asked the hard questions about this move? Do officers at your potential new agency work more for more money? What is their call load? Some may have exotic work schedules.
Fully discuss this with your significant other or spouse first. Coolness wears thin if child care and personal life are affected by this. Weigh all of the options, including all of the little benefits or perks of the job. Compare all the little things that add up. Compare both agencies' laundry allowances, court policy and pay, training, and ability to advance in the future.
Consider what seniority you may now have and what it would mean to start out all over again. Do you want to be a rookie all over again with an FTO? If you have a few years invested and have to start all over with benefits, some departments put off health benefits for six months or until you've passed probation. You may have to seek some personal insurance to cover the gap. What about the investment into your current pension, and are you close to vesting? Don't give up a sure thing here. Fully explore what you have and what you can lose.
Is this new wonderful department pending any futurist changes? Layoffs, annexations, changes due to budgetary issues, or mergers are but a few realistic points. Remember the old premise of last hired is the first laid off.
I am not against an officer who is seeking job satisfaction or happiness. I have known several who switched departments and it was the best decision they have ever made. I know some who regret switching. Others wish for a "do over" in life and we rarely get these.