For really cheap you could just throw in some raspberry ketones but they aren't really really effect but if you have a good fat burner it probably has some type of appetite suppressant in it already. What are you using now?
You said with the diet and workout plan your on you should be losing without the burner..... And you are having a hard time controlling your appetite. That makes me wander what your diet is. You may be restricting too much and that's why you're hungry. Especially if you're working out harder at the same time. What's your intake like?
Shift from PES is incredible at suppressing the appetite. I don't have much experience with fat burners and such but when I was on Shift it was absolutely incredible.
OxyMax XT is great at controlling appetite. I can take a capsule, do fasted cardio/training and not even be the least bit hungry for several hours after. In addition, if is a strong thermogenic and provides great mood enhancement due to the nootropics.
How is your fiber and water intake? Fiber can help suppress appetite. Also, if you feel hungry drinking a bunch of water can help too
For extra fiber I eat one wheat tortilla a day. 50 cals, 15g carbs but 12g fiber. 5g of pro.