I’ve used both DS’s Lean Extreme and Avant’s Ab- solved, as well as Avant’s Matrix-Abs with 7-OXO DHEA added, as opposed to 7-Keto.
I think Lean Extreme is great in terms of systemic effects, and if you want localised fat burning AND your about 12%BF or over, then a 7-OXO DHEA transdermal works wonders.