Since I use "crimp terminals" in my business all the time, I have found and use the following terminals. I have found these to be better than average:
* Panduit
* Thomas & Betts - Sta-Kon Series
* 3M - Highland Series
* Hillsdale Tool & Terminal
These are available in non-insulated or insulated. The insulated ones come with either vinyl, or nylon, partial or fully insulated.
The above can be had at any good Electrical Supply House.