The best Titanium PAM reps would be the PAM176/177 (Super-reps), but they have black dials. The best Titanium PAM with a tobacco dial and destro configuration would be the PAM 056D from H-Factory (bordering on Super-rep status). Historically the PAM056 was replaced by the PAM117 in 2002 with the change of movement from OP II to OP XI and solid to display caseback. Aside from these differences, they are the same watch.
There are PAM117 replicas but they are low quality replicas because of the inaccurate dial (black instead of brown like the gen) and the incorrect movement (not decorated with PANERAI PANERAI as with the OP XI).
This information is available in the
Panerai "Reference PAM Review Guide". I hope this information proves helpful.