I agree with both of you.
I had 18-70mm and 70-300mm but I sold them.
Now I have a 50mm f/1.8 (Iow light or fast shoot) and I'm waiting for 18-200mm VR.

Until I change to 50mm f/1.8, I didn't know what I was missing.

Yes, get the lenses that you need! And read about reviews on lenses as well.