I'm assuming from the size and weight of that model, that it's a 3500 T1N Sprinter chassis underneath it, rather than a 2500. I don't have numbers, but there weren't many 3500s sold in North America (I've only seen one in the wild).
Yes, the T1N Sprinter is widely perceived as being the more reliable option, supposing you do your maintenance. At this point, they are suffering the effects of age (>10 years out of production) so a lot of belts, hoses, gaskets, etc. parts need to be replaced.
Part of the secret to ownership is to find a good mechanic to help with maintenance. Even if you do a lot of DIY work, you'll probably want some help. I've been unhappy with the service I've gotten in the Houston area. To the extent possible, I plan to use Million Mile Sprinter
in Philadelphia going forward (that works for me because I drive from Houston to Nova Scotia every year, so I'm going that way anyway).
is the treasure trove of information on mechanical and maintenance issues. Go to the "T1N Talk" and "T1N Write-Ups" subforums.