You may enjoy the US Supreme Court's writings. Their judgement are usually really well-written and understandable.
As a lay-person I've come to expect convoluted legalese as found in contract terms, but where those are typically designed to bamboozle and obfuscate, or at least keep corporate lawyers employed decoding and negotiating each others writing, judgements and rulings are designed with the opposite goal in mind. If you are potentially creating case-law, it better be clear what you have decided and why.
[1] http://law.justia.com/cases/federal/appellate-courts/ca9/13-...