2013 nuvi models that support upload of tracks and routes from base camp

I don't think any nuvi supports track/trip log "uploading" (computer -> device). Now if you mean device -> computer I believe all do. That said nuvi "trip logs" are fairly crude by outdoor model standards. Now some such as the 13xx/14xx have a hack to allow 1 sec recording.

As for routes newer nuvi's only support the Trip Planner. Routes from BC are converted to trips. As for which ones looks at the specs. If Routes: > 0 the feature is supported.

As an example: the nüvi 3597LMTHD

BTW on the 2013 models page there is a "Predicts your routes" filter.

Predictive Routing

Predictive routing that uses your “Favorites” list to figure out your destinations without your input. Provides time of arrival and relevant drive-time information.

As Stuart says, you can't send tracks to any nuvi. For routes/trips this chart may help http://gpstracklog.com/compare/garmin-nuvi-comparison-chart

Now some such as the 13xx/14xx have a hack to allow 1 sec recording.

Apparently the 2013 models (or at at least some of them) can do this: http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=147862&#1046659

2xx7 and 3xx7 series have Raw tracklog capability (.GPX files recorded, 1sec interval). Access via Trip Computer - Speedometer (hold for 10 sec) menu.

-Boyd