The best fish I've seen value-wise have been the deathfish and robotfish - they seem to sell for a minimum of 200; I reeled in a perfect robotfish worth 250, I'd assume a perfect deathfish would fetch 300'ish since it's the 'ultimate' fish.

The robot fish have hilarious weights - my record so far was 952.46kg. So if you ever get a wish for catching a heavy fish, just go fish behind the science center.

Mmm guess I'll save and see how the moodlet manager works, can always get the collection helper instead if the manager's a bust.

One thing to note with the telepad is that you can always teleport back to your home if you choose the option from your cellphone. At least I initially missed this.

Well seeing as I am the Emperor of Evil and also the owner of the criminal workplace, I'm safe unless my sim develops a paranoid schizophrenic streak and sends hitmen after himself. 

All in all it's going quite well in my current game - just need to decide whether I should get the moodlet manager or the collector finder thingamajic next.

I purchased one from the grocery/general store, along with "World's Brew Bubble Bath". Haven't tested it yet, but after putting it into my shower/bath, I got the option for a 'Wicked Bubble Bath' for my evil sim.

Edit: I'm also in the criminal business, and the work-related bonus (Your sim working on a job and puts a little 'extra' on the side for himself - random item(s) to your family inventory) is superb. I almost always get some very expensive piece of art. Selling those 12k statues or 8k paintings really gives a boost to your overall income.

I've heard from other people with different careers, and I'm pretty sure the criminal career is one of the most profitable.