Your are most probably looking at a variation of the 'Intek' which is simply a very entry level engine, this morphed into the Intek 'ELS' which morphed into the Intek 'Professional' bottom line ; the 'ELS' and 'Professional' variations are the Intek, nothing more: get the manual and it will be listed as such.
Some of the best advice with regard to mower buying was posted here recently-if you can't get the full Monty skimp on the deck-go stamped rather than fab and get the best drives-minimum ZT2800, and a Kawasaki.
Beware ANY completely sealed, ie Tufftorque K46- drive but its going to be hard with lawn tractors and alot of 'garden' tractors-they are everywhere.
To date the best bargin, by far, that I have seen is the Gravely ZTXL combo deck, ZT2800, powder gears but with filters, and a Kawasaki-yes its the FR, but even the most basic Kaw is alot better than any 'professional' Briggs.
And of course you need to buy from a source that will take it back if you are not happy-ONLY Deere as a manufacturer, will do this with its tractors and of course Sears, the Depot and Lowes will also.
Right JD ?