ok, from what i've read in the other thread, you have just got yourself a tracker.
depending on what you are willing to spend on traction aids, maybe a spool or auto locker is the way to go. everyone wants ARBs, but still want to keep their arms and legs at the same time. so it sorta goes something like this.....
LSDs are very expensive and do not offer 100% lock up of both left and right axles. the only good thing is, they do provide more traction than a normal open diff, and are pretty much un-noticable when driving on road. eg: a daily driver. LSDs do have some sort of tuning ability, as in, how much slack it has. most on road race cars have LSDs, and most have then set up to achieve almost 100% lock up. but you might as well go ARBs with the money you spend on LSDs.
Spools are great if you want good predictability when dail driving and on wet roads, as it is 100% locked, and will not unlock. Spools are reasonably cheap, and another good thing about them is, if you dont like it, you can take it out and sell it, and be back on a normal open diff. this is opposed to WELDING the centre. this is the same as a spool, but will not be reversable. i believe spools are about $99 in the states, and welding is almost free, depending on how good you buddy can weld. (or yourself)
Tyre wear is increased, but most will say its minimal and not noticable.
Auto lockers such as a lock right, are a good compromise. when they lock up, it is 100%, and when they unlock, they unlock 100% also. the lock rights work on a mechanical cam type ramp system, which, when loaded with force or torque, push outwards the 2 centre drive plates over the side gears and lock both axles together. i believe this is good when fitted to a daily driver, as you can choose to let it unlock on the pavement, and increase tyre life, or keep it locked and have slightly more tyre wear as a spool would.
with the auto lockers, obviously you dont have control over when it will lock and unlock, compared to the selectable ARBS, and with that, you will need to adjust your driving style slightly. there will be some funny noises and jerks and so on at first, but you quickly get over it and enjoy what it has to offer. also, on road and slippery surfaces, as in ice, or rain, the auto locker become quite hard to predict, and you may find yourself in a 180* situation. but its all fun.
i run a lock right in the rear of my vit, and i love it. i started off with 235s, then went to 31"s. i had no problems with the locker, or road manners for that. i am now on 33"s.
you also mentioned you wanted to lock front and rear. some people i know spool the rear, or weld, and use a lock right in the front. with the front fully locked with a spool or welded, steering may become heavier, and your turning circle will increase. many overcome this by unlocking either one or both front free wheeling hubs. also, if you plan to wheel in mostly mud and so on, a fully locked front will decrease the ability to steer they way you plan, and may tram track more.
you can use a few combos to lock front and rear, or you can just weld front and rear and be fully locked for almost nothing out of pocket.
hope this helps.