LAX - HND RT - Aeroplan or ANA?

Last month, I saw some available award business class tickets to Tokyo via ANA, and I took the chance to go on a 2+ week trip to Japan (November 12 - November 30). I had 180k+ points on Amex. The cost via Aeroplan was 150k points + 106.50 CAD or 160k points. I opted to pay with 150k points plus cash. I saw that I can get round trip tickets directly from ANA for 85k points + 868 USD surcharge.

This is my first award trip and I'm not seeing myself shelling out more than the cost of an economy ticket out of pocket to fly business, and if I value each point as 1 cent, the Aeroplan option is cheaper. That coupled with the immediate and more accessible nature of booking via Aeroplan made me choose that option.

I had a great trip, but I'm wondering if I could have done better. I've got about 30k points left, which isn't enough for a one way international trip from LAX anywhere, but this will be helpful for the next time I have enough points. In general, is it better to pay with more points or with more cash? Logically, I think it makes sense to pay with less points and more cash if you consider the retail value of these business tickets (5000+ USD), but emotionally I can't justify shelling out that much cash just for a business flight.