Protein database search after MALDI-TOF

I did Co-IP followed by trypsin digestion and MALDI-TOF to find out the interacting proteins. What would be the best option to perform a data base search?
Previously, I have tried protein prospector (MS fit) from UCSF and MASCOT search. Which is a more reliable site for data base search using m/z values? It would be great If you provide some guide lines for data base searches to eliminate false positive data.
Thank you so much for your help!