As much as I like Bruce's solo albums, I think the only one that can come close to the best Maiden albums is AOB - pure magic !
Tattooed Millionaire is a good hard rock album, but if it was combined with BTP then it would have been a great combined album. Though, the song Tears Of The Dragon is a metal hymn (a very different song from the Maiden style). Bruce can sing any styles, but he is the best at heavy metal !
TCW is a good album, but for me, it is not that great - maybe if Adrian had written more songs.... I like TOS more - which is a very good album with one filler strange song - Believil - this album have in it all of the styles and vibes from the previous ones combined at one + the lyrics are fantastic.
Skunkworks is a album that I dislike - I tried to like him, but no way.... but Bruce is experimenting with it....