First of all, the only person who has to be satisfied is you. If you want to keep it simple and are shooting well, then have at it.

If you know a friend who might let you borrow a stabilizer to try, you could find out if it would make a worthwhile difference. One thing to think about is that if you are planning to hunt with a bow quiver, the stabilizer (even a cheap solid one) will make your bow more resistant to torque which could cause problems with broadhead flight and accuracy.

Now, I've gotta say that the first bow I ever put Limb Savers on was pretty quiet, or at least I thought so. I read on forums like this one about how effective they were, so I tried them. At the first shot, my jaw must have dropped. I could actually hear the click of my release opening!
If you are on a budget, then the $12-15 that solid limb savers cost will be well worth it. They don't slow the arrow to any significant degree, if at all. All of the rest of the Sims products pale in their effectiveness compared to Limb Savers, IMO. Well worth the cost.