Hi Vicky,
There are probably hundreds if not thousands of forum members that have successfully purchased a good quality/value innerspring mattress thaqt they are happy with over the years that the forum has been in existence in one version or another (there are thousands of different innerspring mattresses) and innerspring mattresses are by far the most common type of mattress purchase in the industry as a whole.
I would also be very cautious though about using other people’s experiences or reviews on a mattress (either positive or negative) as a reliable source of information or guidance about how suitable or how durable a mattress may be for you and in many cases they can be more misleading than helpful because a mattress that would be a perfect choice for one person may be completely unsuitable for someone else to sleep on either in terms of suitability or durability (see post #13 here).
Brand shopping can also be among the most risky ways to choose a mattress because you are buying a specific mattress not the brand and all manufacturers have access to the same or similar components and materials. Most of the most heavily advertised and most commonly available brands that you would recognize are the ones I would avoid anyway (see the guidelines here) and many of the better manufacturers are smaller and are only available locally or regionally. The name of the manufacturer on the label also won’t tell you anything about whether a specific mattress is suitable for you in terms of PPP or whether there are any lower quality materials or weak links in the design. There is more about the risks of brand shopping in post #5 here and post #12 here).
The most reliable way to know whether any innerspring mattress is a good match for you in terms of PPP (regardless of whether it would be suitable for anyone else) is with careful testing and your own personal experience using the testing guidelines in the tutorial post.
There is more information in post #2 here about the different ways to choose a suitable mattress that is the best “match” for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) that can help you assess and minimize the risks of making a choice that doesn’t turn out as well as you hoped for that are involved in each of them.
There is also more about the most important parts of the “value” of a mattress purchase in post #13 here which can help you make more meaningful quality/value comparisons between mattresses in terms of suitability, durability, and value.
Phoenix