Hi chadb97, matressshopper123, tdoyon,
I switched the last few posts to a new topic with a different and more relevant title because they were starting to stray outside the scope of the original topic they were posted in.
@ tdoyon
It sounds like the medium may have been a better firmness choice for you. It can be somewhat misleading to compare one company’s “medium” with the same “rating” with a different company because there are no “standard” definitions or consensus of opinions for firmness ratings and different manufacturers can rate their mattresses very differently than others so a mattress that one manufacturer rates as being medium could be either firmer or softer than another mattress made by a different manufacturer that is also rated as a “medium”.
In any case … congratulations on your new Spindle mattress 
As you know they are also a great quality/value choice and I’m looking forward to your comments and feedback once you’ve received it and have had the chance to sleep on it for a bit.
@ chadb97,
I would keep in mind that the first two “P’s” in PPP (Posture and alignment, Pressure relief, and your Personal preferences) are what you “need” and the last “P” is about your personal preferences so if you aren’t experiencing any “symptoms” on a mattress (lower back pain or pressure points etc) that comments about what a mattress “feel like” may just be part of the initial adjustment period on a new mattress (see post #3 here). I would be cautious about changing a firmness level based on preferences alone because it may compromise what your body “needs” and any actual symptoms you experience (or lack of any symptoms) are the most reliable indication of whether a mattress is a good “match” for you. Don’t forget that you can’t “feel” a mattress when you are sleeping.
If a mattress is too firm and there are no soft spots or sagging in the mattress then a good quality topper or mattress pad can certainly be an effective way to add some additional softness, “comfort” and pressure relief to your sleeping system but the only way to know whether a specific mattress pad or topper in combination with your mattress is a good “match” for you in terms of PPP (Posture and alignment, Pressure relief, and your Personal preferences) would be based on your own careful testing or personal experience. If you can’t test the combination in person then there is always some risk and uncertainty involved in adding a mattress pad or topper because the specifics of the mattress itself along with your own body type, sleeping position, and preferences can affect which specific mattress pad or topper would be a suitable choice on any specific mattress.
The type of mattress pad or topper that you may wish to add would would be a preference choice rather than a “better/worse” choice and would depend on how much additional softness and pressure relief you would need and on the types of materials and the “feel” that you tend to prefer.
You can read a little more about fiberbeds and mattress pads (which use polyester fibers) in post #10 here and in post #2 here.
If you decide to make more significant changes to your mattress and add a topper then there is more information about choosing a topper in post #2 here and the topper guidelines it links to which along with a conversation with a reliable supplier that can provide you with good information about how their toppers compare to each other or to other toppers they are familiar with that are available on the market can help you use your sleeping experience as a reference point and guideline to help you choose the type, thickness, and firmness for a topper that has the least possible risk and the best chance for success.
Phoenix