Time to upgrade my rotary rake

I mow with a NH 1411 Discbine and plan on staying with 10 foot machine . I have a Miller Pro 1150 I bought used 4 years ago which other then grease and oil I have not spent a cent on but I’ve pushed my luck long enough with it.

I would like to upgrade to a two rotar rake and have found several Kuhn 7822 and 7922 rakes for sale . Also have been looking at Krone and Claas rakes also . Now the questions

1st Am I looking at the correct size rake for my 10 foot machine.

2nd Krone and Claas are vague on there clean sweep so what model am I looking for there .

3rd what if any pros or cons of going to a double rotary rake.

Time to upgrade my rotary rake