SLR Canon700d and 60d, Sony a6000, Nikon d7000.

The 60D uses Canon's sensors. Poor tolerance. After all, it is a 10-year-old fuselage, and the configuration is basically not good. The only advantage is that it is cheap, has a shoulder screen and is higher.

The 700D uses a slightly newer sensor, and the imaging is better than that of the 60D.

D7000 is an old machine, too. Not very recommended.

Sony A6000 is the most cost-effective of these machines in terms of body, and the focusing speed can be comparable to that of SLR with a price of more than 10,000 yuan. Other small functions are not lacking. And the electronic viewfinder is much better than the optical viewfinder. The disadvantage is that the battery life is shorter than that of SLR, but it supports charging treasure. Not a short board.

I personally recommend 700D and A6000 for the four models you mentioned.

But the SLR is just playing with the lens. As far as the fuselage is concerned, Sony has the highest cost performance, but its lens is more expensive. If you want to invest in the future, you'd better enter Canon, whose lenses are cheap and easy to use.

And ... listen to your question. If you shoot indoors and at night, buying standard lenses like 18 135, 18 105 will make a bad film.

It is better to have two or more shots. I recommend two cost-effective configurations here, namely, 700D body+18 135 zoom and 50 F 1.8 fixed focus. Zoom is usually used to hang up. Use fixed focus when the light is bad.

The second set is A6000 16-50 zoom+Sigma 30 F2.8, which is better than the last set, but the telephoto end is a bit short. If your budget is high, replace 16 50 with 105g.