Thanks for the support and kind words! Matt has some truly great products and I think a handful would all be good for the choosing for you. 18% is kind of in that no man's land where Epitome may not work as well for you, but I'll admit, I've been running it indefinitely regardless of bf% and won't stop it unless I have to (I took a few weeks off to try and stretch out my last bottle and I noticed increased cravings and a lack of vascularity). But what I would suggest as the top 3 would be DCP, BRITE, or SuperNova. SuperNova is the topical version of BRITE with the benefits of Eviscerate, as well. If you're not opposed to a topical, that will likely have the most quickly noticeable impact. DCP is a solid one that is widely loved and a great formula. Any of those should really suit you well in your current cut.
Additionally, the new 3mg AlphaBurn is great and I truly love it, but I don't think you'll see the same level of results out of one product with this vs. any of the 3 I just mentioned. I pretty much am a fanboy of everything Matt has churned out and you really can't go wrong, but if you're looking at just one, I would choose from the 3 I listed.
If you have any questions at all regarding other products, dosing, etc., just post away and I'll be happy to help as much as I can.