I use Makro in the last 2 years. Usually in freshwater. I love the sensitivity, the bulit in lamp. I can't turn on now, something wrong but under warranty. I send back i hope the best. I has a PI detector and necessary in gravel conditions.
I have both the Makro and the Garrett At pointer. The Garrett is easier to use, however, the Makro has greater sensitivity. The Makro, with the buttons on the end make it kind of awkward at times to adjust, or power off. I find the Garrett a time saver over the Makro.