I have a craft table with two large leaves that open out from a center cabinet. The leaves are supported by wheeled pull out vertical panels that put a swing out support on a diagonal from next to the center cabinet to the outer edge of a leaf. I used it for a long time.
After a while, no matter how careful I was with cutting, there was always an unwanted curve in my cut fabric. So I finally stood back and evaluated the table. I noticed that each leaf was curved downward from where the support was on the leaf to the edge of the leaf. After examining my cutting board, I saw that it was no longer flat. It conformed to the curve of the leaf.
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The craft table is now used (leafs down) as a coffee station in the kitchen. Half of the dining room table is now my cutting table, new mats were purchased, and I lucked into a used Accuquilt Studio.
My quilts are straighter because my cutting is better. Purchasing dies for the Accuquilt cost me a small fortune on sale, but they are worth every cent paid for them.