When you shop, keep in mind that you have only 5 devices (maybe 4). The Wii can't be controlled by any universal remote and the PS3 only can with the addition of an adapter ($10-$150 depending on capabilities). So you need to decide if you even want to control the PS3. The harmony 600, 650 and 700 will work fine in your case and are much less expensive and probably more durable than a One. Consider the 900 only if you need RF, i.e., some or all of your components are hidden from view.
There are also basic universal remotes for $20 or less that will work fine, like the URC WR7 and the RCA RCRP05BR. In fact, with the addition of a programming cable and some free software, even your cable box remote can likely be programmed to work almost as well as a harmony.