。
Honestly, none of them are impressive.
Literal
Honestly every-last-one impressive-not.
正直 'honestly' as a sentence-opening discourse marker, framing the speaker's blunt assessment. どいつもこいつも 'every last one of them' — a contemptuous group reference using rough demonstrative pronouns こいつ/どいつ. パッとしない 'unimpressive, not striking' in mixed orthography (パッと in katakana) for slight stylistic emphasis.