Popular Mechanic had a piece years ago about ""NOT"" using wire cages.
Better deal and no more weeding and crawling around on the ground.
5 gal buckets
drill or cut 1" max. hole in the bottom of bucket. Arrange the plant to come out this hole;; file the bucket approx 2/3rds with your favorite planting material.
Hang the bucket approx 5ft off the ground and PRESTO, Hangin tomatoes.
About the most perfect solution.
Tried it; works perfect; watering isn't a chore; plants seemed happy.
Use a 1gal milk jug with 1-2 small hole in the bottom for watering all day.
Don't make the holes in the center on each side.
Results; more tomato per plant, nothing sits on the ground for slugs, or ground rot.