It will naturally depend on your budget. Generally the watches off the shelf from the trusted dealers all need modding. Modding can be a fun and frustrating experience, if you don't want to tackle the task yourself there are some very talented modders on the forum to help you. Alternatively keep an eye on the members sales section or start a "want to buy" thread. Decent watches do crop up. Profiteering is frowned upon so you could pick up a decent watch at a lot less than it would cost to buy new and mod.