Recommended bed for us.

Hi, we are looking to change our bed as our current one is nearly 13 years old. Our existing bed is a" Wyespring Doctor Luxury" with sprung base bought from Dreams and have been relatively happy with it . The details on the mattress show it having 1200 pocket springs, warm wool side and cool cotton side, a natural laytex layer (doesn't say where this layer is), and roll resistant.
My wife is 5'0" and weighs 81/2 stone and I am 5'10" and weigh 11 1/2 stone. We are looking to change both mattress and base . What would be your recommended mattress for us and what type of base unit to match. We look forward to your recommendations.