In reply to Alex.

Liquid stevia is preferred by many because it is all natural and dissolved nicely. We use it in some paleo friendly desserts as well as pair it with erythritol. Erythritol on it's own, when used in large amounts, gives a "cooling" effect on the tongue. Using both erythritol and stevia lessens the effects of both and works very well in low carb baking.

You can use your syrups, but as they're sucralose, not stevia, I think you'll need more of them to sweeten the same amount as pure liquid stevia. Liquid stevia is very strong and you only need a few drops to sweeten something. You can use the syrups in place of erythritol, but as they're liquid, I'd be careful using them in recipes calling for granulated erythritol. It'll throw off the balance and you may end up with a very wet dessert.

Here's the erythritol that we use in most of our recipes: http://amzn.to/2eInGrh
And here's the stevia we use most often: http://amzn.to/2eIpSPH

Hope this helps!