What is the BEST Registry Cleaner for Win 7 Ultimate or Pro 64 Bit version OS ?

I think I get the picture.

Microsoft devised the registry to store important information about Windows itself and applications. Normally important configuration files should only contain clean data.

However Microsoft did not want to invest in / forgot / could not be bothered with / was just to lazy to produce a utility that checks the registry for consistency and redundant clutter. Instead we just have a simple editor as the only way to do maintenance on the registry.

Those of us who think that a polluted registry file caused them problems are just imagining things, that can not be. Windows has been devised in such a way that it can deal with all that clutter in the registry. There's nothing wrong with loads of junk in the registry. It is not a bug in the design, it is a feature in the best of Microsoft tradition.

You seem to be knowledgeable about how the registry works.  Can you explain for us the exact mechanisms involved in "redundant clutter" contributing to poor performance? How does this work exactly?

Revo will remove entries specific to the program being uninstalled, as opposed to scanning the registry as a whole for "errors."  The Pro version tracks installations as to what changes they're making to the registry and includes preset data for many programs so that only relevant entries are affected.   There is still an element of risk, but far, far less than there is with a general registry cleaner.

Thank you.  So maybe that is the way to go then.  So even 'Wise Registry Cleaner' is no good then?

Those of us who think that a polluted registry file caused them problems are just imagining things, that can not be. Windows has been devised in such a way that it can deal with all that clutter in the registry. There's nothing wrong with loads of junk in the registry. It is not a bug in the design, it is a feature in the best of Microsoft tradition.

You are correct in that a "polluted" registry DID cause problems in Windows 9x and XP

Since the advent of Windows 7, the way Windows accesses the registry has changed. In prior versions, applications would search the registry for the entries relating to that application.

In Windows 7 and above, applications' registry entries are "hard wired" to that app, hence the app doesn't search for the entries, it goes straight to them.

That's why orphaned entries in Win 7, 8, and 10 registries don't affect anything, and why there's no need to use any sort of "cleaner"

Ok - I can accept that.  So - having now reinstalled to factory settings for a fresh start, I am now uninstalling a large number of outdated and obsolete programs that came with the laptop, and uninstalling free trial versions etc.  So do I need something to clean up bits left by uninstalling these programs to start with a clean system?