1, Do you have SSQA or the JD equivalent?
2. Is your present bucket fairly strong?
3. What's your perceived usage?
If you have a QA then a QA solution makes sense,
/edit unless $$ are tight
If you don't clamp ons are good if you have a strong bucket, but I've seen some that may get bent with clamp ons. I've 2 tractors that I use Titan clamp ons with, but I have only very occasional usage.
I you are going to be using them frequently and wanting to switch to other FEL attachments then clamp ons don't make much sense.
I really like my clamp ons, and have occasionally put all 4 on my M4700, but then I don't have SSQA yet. Another slight advantage of clamp ons is they take up little space when removed.