I've been using Standard Resume on and off for over a year, and I've enjoyed the service overall. There are some quirks of the product that need to be learned before the experience becomes mostly seamless. Still, it accomplishes its goal of providing optimized resumes in a pinch that (if you already know how to pitch yourself) immediately set you above most applicants. Creating new resumes based on previous resumes is also incredibly easy now too.
One Disclaimer I will add: This service alone will not ensure your resume gets read. Even worse, if you're not aesthetically minded or don't understand what does/doesn't need to be in a resume, it may even sabotage you. It's very easy to take Standard Resume's nice templates and turn them into garbage. I wish the company would provide more resume feedback and tips to ensure your resume is ready to send off. Then, the product would bring 10x the value!
Will be continuing my subscription!