Hi Grateful,
An innerspring/latex hybrid can be a great choice in terms of quality and is a favorite combination for some people I know who could sleep on anything they wanted to but there are also hundreds of versions of the same general type of mattress so which innerspring/latex hybrid may be best for any specific person in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) can vary widely. The best way to know whether a specific innerspring/latex hybrid would be a good match for you would either be your own careful and objective testing or if that isn’t possible then a more detailed conversation on the phone with an online retailer or manufacturer that you are interested in (see post #2 here). There is more about an innerspring/latex hybrid vs an all latex mattress in post #2 here.
The tutorial post includes a link to a list of the members here that sell mattresses online and they include several latex/innerspring mattresses of various types that would certainly be worth considering. There may also be some local options available to you as well that you could test in person (if you let me know your city or zip code I’d be happy to let you know of the better options or possibilities I’m aware of in your area).
The SleepEz Euro Pillowtop could be a great quality/value choice but it probably wouldn’t be similar to the Kingsdown Summerset (Somerset?) and since Kingsdown doesn’t generally provide the specifics of the materials inside it I would avoid it (or any “blind” purchase) anyway. The Somerset appears to use gel memory foam and/or polyfoam in the comfort layers … not latex. I also believe that the SleepEz latex Eurotop is only available locally not online (although you can confirm this with them).
Phoenix