Well I find that I tend to want a bigger aquarium, but I think it is perpetual. I would lean towards getting the biggest one you can afford and have space for.
As for is it worth $130. That depends on how much $130 is worth to you. I like to think of it in terms of how long it takes me to make that amount of money. So it is not too far off to say that $130 is a typical days wage. So is the advantages of a 46 gallon bowfront worth 1 day at work.