Well, sorry, but there is no objective answer to this question because there are far, far too many variables.
The DSLR I'd get for $1500 would be a used Nikon D800, which is around $1000 now. Great deal at that price. No lenses yet though.
The top camera to get for $1500 right now would be the Fujifilm X-T3. Thats not a DSLR though and for $1500 you wont have any lenses yet. Or flash. Or tripod. Or carrying bags. Filters. Memory cards. Batteries. Etc.
If I personally had $1500 to spend and get a complete set of gear for photography, my personal choice would be Nikon D700 (used ca $500 and falling), Nikkor AF 35mm f2 (used ca $200), Tokina 100mm f2.8 macro (used ca $250), Phottix Nikon flash & controller unit (IIRC ~$400), Manfrotto BeFree Aluminium (ca $150). Thats all optimized for my own personal needs though. Your needs may vary greatly.