Which NTS300 are you buying?
Use the model family as a starting point, then record the selected probe details. Lens count, diameter and length are not interchangeable specifications. If two listings seem to offer the same camera at different prices, compare the supplied configuration before treating one as a better deal. This review focuses on the documented dual-lens setup.
Front view versus side view
Our buying interpretation is that a second viewing direction can help when the relevant surface lies alongside the probe rather than in front of it. It does not create remote steering. Think through where the camera will stop and what it must see from that position. That is a more useful decision than simply maximizing lens count.
Choose a manageable cable length
A spare coil has to be stored, cleaned and controlled on each call. Buy enough reach for the access you expect rather than assuming that extra cable is free capability. On difficult pipe geometry, a different inspection method may be needed even when the nominal cable is long enough. We have not tested bend navigation on this model.
Recording for the customer and the next visit
Before closing access, collect a view that can be associated with a location and the question being investigated. A useful job record explains what can and cannot be concluded from the image. For repeat visits, consistent labels can matter more than the camera's headline capture resolution. Test your transfer routine before relying on it for customer reports.
How it compares with the simpler RIDGID
The CA-25 suits a short, uncomplicated view-only task. The Teslong is worth considering when configuration and documentation are reasons to move beyond that approach. We do not claim the NTS300 survives field use better or resolves more useful detail in practice; those would require hands-on comparisons under the same conditions.