er...lets just say 99 % of them only twelver scholar I can say who I sincerely think is well versed merits of sahaba i met was SHM Jafri the author of the book "origins and development"
Well, if for you sahabs are the likes of Marwan bin Hakam, Muawiya, Khalid Bin Waleed, Yazeed, Amr Ibn Aas, Abu Sufyan etc then i have no further comments to make.
If you talking of sahabas who loved Allah (swt), Prophet (pbuh) and Islam, then i challenge you to find anything remotely derogatory about them in either a Shia text or shia gathering etc. Infact one will find much more comprehensive and detailed works by Shia scholars on the sahabas like Abu Dharr, Abu Ayub Ansari, Salman Farsi, Bilal ibn Ribah, Abd Allah ibn Abbas, Ammar Yasir, Hamza Ibn Abdul Muttalib, Miqdad ibn al-Aswad al-Kindi, Ibn Abbas, Jabir bin Abdullah Ansari etc.
Shias love great sahabas and love to sing praise for them as they thoroughly deserve it.
However i find it fascinating to see the sunni side on one side claiming great love for the sahabas yet no condemnation for Uthman as under his rule Abu Dharr died of the lingering effects of beatings he received at the hands of Uthman's soldiers. Muawiya, Ayesha, Talha, Marwan for fighting baatil battles resulting in great fitnah and killing of hundereds and thousands. Yazid for stoning the kaaba etc. The tale of cruelities is long.