re: ace garbage disposal cracked and leaking.. recommend me a new one

If you must buy one choose one with the shaft that can be cranked from the bottom with the included wrench otherwise when it jams it's done.

Also 3/4 hp disposals are smoother and quieter than the cheap smaller ones. Don't go too large if you have an under mount sink.

You really should consider doing away with it anyway. They only lead to potential trouble and lost money in the end.

If you have cast iron drain lines in the slab or wall owning one may be one of the biggest mistake you make in this lifetime. The acids from food particles rot away the bottom of cast iron drain lines.