I have compared Opus 5 High and Sol High for legal advice and I consider the advice infinitely better with Sol. Far fewer hallucinations (zero, in fact, with Sol and the right prompt). The suggested text and responses also felt much less like AI. The research was more accurate with Sol. It's positively German in its attention to detail and thirst for being technically correct. Which is exactly what you want in a legal case. Opus 5 High is more of an ideas guy and is much less concerned with the letter of the law.