Checklist / templates/ document check services?

Hi

I've seen that migrate.org.uk offers a checklist service and letter template service for 175 pounds. Is this a good service and is it worth it?

I've seen other companies offering their services for $400 or so to check everything and that they have a 95% success rate. Are these reliable? worth it?

If in your opinion, it is not, then what would recommend be the route we take to make sure that all of our documents are present and correct?

Thanks

The approval rate for applications from the USA is over 95%, so I wouldn't put any weight on their checklist. 

We can answer any questions you have for free.  There really isn't anything to fear.

If you want to work with an immigration office, we only recommend Medivisas or Laura Devine's agency.  But unless you have criminal convictions or a previous overstay of a visa, there really is zero need.  It's a tick box visa.  Tick the boxes and you get your visa.  It really is that simple.  Hard to see that it's simple during the process, but after you are approved, you'll realise all your fears were unfounded. 

Thank you very much KFDancer. You know how to destress a guy!