I own a Garmin Nuvi 1410 bought almost 4 years back.
It has, and still does, serve its purpose, weather on road or off road, though the off road usage is limited to just know which direction to head to.
One can create route, using Base Camp, but it is a pain to use and setup. Tried once and decided never to do it again.
On road, have used it extensively here in UAE, Oman and also India (right across the country) and have not yet come across an issue. Well, yes, sometime in India it does tend to take you through some village road, so local knowledge still beats Garmin.
There are multiple options to update your map or get additional countries, both legally and illegally. Such sites are dime a dozen.
I currently use the OpenMap free maps for Garmin, where in I can select the area required and download the IMG file.
The link :
http://garmin.openstreetmap.nl/ This beats the extra you will need to pay for the LT series, which give you 'Life Time' maps. Do realize that Garmin's 'Life Time' for free map update is based on their product life time cycle. So, once they mark your model as at the end of its life cycle, you will no longer get the free update. And new maps are usually released once a year.
All new iterations of Garmin supports placing your additional maps in a folder called "Map"; any IMG file placed here will show up in your maps selection option. Do not select multiple maps at the same time, as the rendering will become horribly slow.
As it stands now, do not feel the need to upgrade.
How has your experience been? Have you upgrade to any devices, and if so, how has the upgrade been? Are you using all the benefits offered as we usually end up using only a fraction of the features offered.
PS: Do not share links to any illegal file sharing sites.