I ordered a new Mayflower plate carrier, and obtained one pristine pre-owned Velocity Systems Level III plate. Then, I bought a pre-owned First Spear Strandhogg MBAV with Velocity Systems IIIA soft armor in the front, rear, and sides. The Strandhogg system will, I believe, become my on-duty "tactical" vest, when I have two new Level III plates. The Strandhogg has separate pockets for the soft and hard armor, and the MBAV-cut soft armor panels are larger than the plates. I think the Mayflower carrier will be good for times I may want to wear plates alone, such as while attending rifle training, or perhaps I will re-home it with a colleague.
The plate I have now is "expired," but can be useful until I get a pair of new plates. The reason to buy two new plates, is so I can be exempted from being issued a pair of the horrendously heavy Level IV Hesco plates at the beginning of each shift, and also be exempt from having to wear my ill-fitting concealed armor under the uniform shirt. We are required to wear armor while on patrol, either concealed or outside the shirt, and it must be within the warranty period. We can wear a "tactical" vest if the plates are at least Level III, and it is suitably marked with "POLICE" lettering front and rear.