Hi Researchguy.
Welcome to our Mattress Forum. 
While I personally haven’t slept on a Shovlin mattress, they are one of our Trusted Members and we think very highly of them and believe they compete with among the best in the industry in terms of durability, knowledge, customer service, and more.
You may find this member feedback useful as well as this thread.
Of course, if anyone who has purchased and slept on this model sees your post, I do hope they chime in!
NikkiTMU