You have your keyword list that says which search phrases searchers are searching for when they search for your home page and your product, but you might want some brainwaves to insert flavor and improve conversion. I have put together some words that I wish will inspire you.
People don’t notice the same things following they are continually exposed to them many times. In online advertising banner blindness is the most famous case. People basically get used to banners that promote something that is not worth their time, therefore they stop notice the banners after a while. The same thing happens with words that are used to make us do something.
Thus, you ought to alter your action words occasionally to keep them effective. The problem for most writers is that it is tremendously complicated to alter the words because of old habit.
I have made this list of actions words to facilitate you alter words occasionally to keep making your web copy effect full.
Here are a few examples on how you can vary authority and simplicity words.

Indicating Authority: endorsed by, recognized, reliable, widely, reputed, well-known, famed, legitimate, first choice of, notable, eminent, legendary, popular, trusted by, authentic, prominent, distinguished, trend setting, widely recognized as, renowned, widely used, talked about, famous, illustrious, dependable.

Indicating Simplicity: simple to, without ornamentation, minimum, trouble-free, undemanding, sticking to the facts, uncomplicated, straight-thinking, clear, plain and simple, minimal, effortless, precise, without a hitch, clear-cut, unproblematic, down to earth, unequivocal, unfussy, smooth, natural, unembellished, definite, explicit, unpretentious, clean, safe and simple, unsophisticated, normal, easy to, unadorned, ordinary, with both feet on the ground, usual, unambiguous, indisputable.