For less than ideal environments, what lock would you trust most. Not only for not failing, but also for long term operation. Environments, such as dirty, dusty, wet conditions; in a word, outdoors. I like the history of the lockback, but it has more places for dirt and moisture to get in and is more difficult to thoroughly clean. Liner/framelocks are usually open and easier to clean, but dont always have the best reliability. I am looking for a medium to large folder (3 ½-4 blade) with some heft and strength for general use. It will see use when camping, fishing, hiking, work in the garden, etc. What are your experiences or thoughts. Thanks.