Sorry to bother you, but you are no longer asked if you want the 14 day trial.... it now installs with the 14 day trial, if you wanted only the FREE version installed you have to go to the Account tab and End the Trial.
There is no difference between the Free, Trial and Premium download files. The installer/setup for all three are the same. If you are installing for the first time during the install, it will ask if you want a 14-day trial mode. After the trial you can choose to continue using Free or upgrade to paid Premium.