Disclaimer - I do not, have not, and probably will not - previously, currently, nor in the future - own, operate, or otherwise use a Ratchet Rake.
Now that that's is out of the way . . .
For landscaping, clearing, clean-up work
If you plan to keep on doing a lot of land clearing into the foreseeable future (vs this one place one time) or you need to be able to work "piece mill" over a long period of time then a Ratchet Rake will probably be a good investment. If this is a one shot deal and you can take a day (or days) and do it all at once then I would go along with teg's suggestion and just rent the Landscape rake, yard tool, or even a powered harley rake.
For digging
I vote for the BXpanded piranha tooth bar all the way. Love mine and will never be without one ever again. As was also mentioned - the Piranha and/or the heel of the bucket can get you a pretty "fair" surface if all the junk is out of it but it is NOT nor will it ever be a raking device.
Unfortunately there is no single do-all solution, that's why there are so many implements, attachments, and tools out there. You have to decide which combination will get you to the state/quality of finished work you need for the price you're willing to put out. As has also been said before, sometimes there's just no substitute for a good old fashion shovel and a pitchfork.
Best of luck with what you choose.