Personally, I like the navigation in Basic better.  The one think I don't like about the navigation in Basic is when a client has a lot of depreciable assets.  The way Basic is set up it can be cluttered and a bit difficult to find the thing you are looking for.  Other than that, I like the navigation in Basic better than Professional.

Basic has few less options for non-tax-return things (selecting different printers for different things, client letters, etc.)

In Basic the 'find form' and 'where do I enter' are the same, as is all of the actual data-input and worksheets.

But Basic does not have NOLs, MFS splitting or worksheet, lump-sum Social Security, At-Risk limits and probably a few other things that I rarely, if ever, need.  But if you need those, you can use Professional on a PPR basis.

On the other hand, how much money will you have if you switch? Is it worth trying to figure out the different navigation, and dealing with a few less options and maybe a few less forms?