As others have asked what size, what price range ..etc....new or s/h?.......& what spec's BTB ?A & T?, rippers?, Tree pusher ? Winch? LGP?
And your intended use ......roadmaking, earthworks, ponds/dams, clearing, logging, rock ripping, earth ripping, pad levelling ,scraper tug/pusher ????..etc & is it for private use &/or contracting?
Without these details we'd only be guessing & may give incorrect advice.