Getting TT to follow YOUR route
I, too, am quite frustrated with the fact that TT doesn't allow the manual input of routes, but I've come up with some "work-arounds."
I have a GO 740 Live, so I don't know if YOUR device would have the exact same functionality.
First, figure out the route TT wants you to take, then compare it to your own route (e.g., "Home to Work"). Locate an address about halfway along YOUR route and see if TomTom will generate the desired route to THAT point. Set THAT point as a favorite, naming it something like "0 Midpoint" (by putting a zero in front of the name, it should appear at the beginning of the "favorites" list). Then have TomTom plan the route from "Home to Work," and then have it "Travel VIA a Favorite." When it wants to know which favorite, specify "0 Midpoint" and it should follow YOUR route. If necessary, create multiple "midpoints."
You could also try "blocking" a couple strategically chosen roads that would make the TomTom pick YOUR route instead. If you DO "block" roads, please do NOT share those "blocks"--it could screw up other people's routes!
I did not expect very much from a GPS device (I've only had mine since late November, 2010, and I, too, know how to get where I need to go). I used to use a device called a "Trafficgauge" to monitor real-time traffic info in my area to know which route was best at a given time (you can see a video of it here:
YouTube - TrafficGauge TV Commercial). Unfortunately, the service ended (visit
http://www.trafficgauge.com/), so I had to find something else to show me live traffic data (I do not have, nor do I WANT, a "smartphone," and the traffic reports on the radio are usually worthless).
I have since been playing around with the TomTom, finding out what it can and cannot do, as well as learning how it handles different situations. Though it doesn't give me the live traffic info at a glance like the Trafficgauge did (TT requires some "fingertip" interaction) , it does have some very useful features (like finding a nearby business or address, as well as showing traffic info for some of the major SURFACE streets).
It's not PERFECT, but it's not a POS, either! The important thing is to match the technology (device model) to your needs--and also be aware of the limits of technology.