What camera/lens are you wanting to use it with ?

I have had great results with close up lenses bur prefer extension tubes or bellows. I have a couple of Hoya close up lenses +1 & +2 49mm thread I used way back when I first had a Spotmatic F, (I have another now 30 yearsw later).

In Turkey I have a +2 or +3 for my Yashicamat 124 which is good stopped down. And that's the key to close up lenses stopping down for optimum performance.