Origins Pocket Latex 1500 compared to Dunlopillo Royal Sovereign

Hi,
Our landlord has given us a budget in the range of 600 GBP for a new mattress. Unfortunately, (although maybe not unexpectedly) the mattress we liked the most when we tried in a few stores was the Dunlopillo Royal Sovereign. Given that this is quite outside our price range we are wondering how similar the Origins Pocket Latex 1500 would feel? We generally seemed to also like pocket sprung mattresses with a memory foam layer, but not full memory foam.
We weigh 70kg and 54kg which I guess would give a medium and firm feel with the Origins Pocket Latex 1500 respectively?