Hi MagikMax,
I wouldn't go for Passing Thru. It requires a clear glass bottle of such specific proportions to be fully effective that until Snapple makes a shocking come-back in the UK, chances are you are not going to regularly chance upon the right bottle. It also requires something to be p**med on and off, and therefore has a few angle issues (would not necessarily be ideal for standing performance for seated spectators). Obviously, what it has going for it is it uses a single signed coin and is incredibly visual.
Abyss is a sort of "two halves almost make a whole" product. What you get is two "secrets", one of which is a method of getting a coin that is too big to fit into a plastic bottle into said bottle, so that it can be handed out as an "impossible souvenir". The other is a way to create the "effect" of the coin being pushed into the bottle, for which you receive a couple of items.
The first piece of information is hugely useful - the second (plus items) is a slightly fiddly and not particularly visual way to achieve this effect, and most magicians will instantly recognise an obvious and potentially superior alternative. If someone is willing (and it looks like Bronz is) to share with you the first piece of info, don't bother getting Abyss. It doesn't use a signed coin. You can actually use any coin with the method supplied by Abyss, but the obvious streamlined handling would require you to use a 2p or 1p, and if you're going to bother with the impossible kicker ending, that basically limits you to 2p, unless you use a really narrow necked bottle.
The Abyss instructions don't tell you how, but with extra knowledge you could do this with a sealed bottle. You could either pursuade someone to be nice and tell you how to do this, or by "Labelled" by... Ben Williams is it? However, I feel there is little point in doing Abyss with a sealed bottle - the size of the coin should make it clear there was no way the coin entered via the neck, so why would it make any difference if it was sealed? Finally, in terms of "reset", there is potentially none because you just use a new bottle every time, but they do take a bit of prep, so make of that what you will.
Some of the other CIBs use an optical effect by which to hide the presence of the coin in the bottle - you can make your own mind up but I wouldn't be overly keen on using this, I feel that it'd be an angle nightmare and wouldn't touch them with a bargepole if I was table-hopping.
A final option is something I haven't heard much from for a while, called "Piercing Thru". There was an excellent demo knocking around, it was then promised for release but I don't remember it happening. This uses both a signed coin and a switch (work that one out

), can't be done with a sealed bottle, does take a small amount of prep but could quickly be done onsite with most plastic bottles. You can't leave them with an "impossible souvenir" but you do show it to be impossibly trapped before removing it by cutting open the bottle.
Just done a quick search: it still seems to be in commerical limbo, but you can check out the demo on YouTube
here.