Go used or wait for Black Friday, that's my plan...
But if I was gonna choose, tank totally wins. Fancy phones are overrated! And the tank will hold much of its resale should you ever tire of it, unlike the phone which would be worthless in a year or two.
I think my phone (that I am on right now) was about $150 several years ago. And the plan I have is $12/month. It does everything I need it to do, except a bit more storage space would be nice. Why spend more... I just don't get it.
A 125g tank on the other hand... So many possibilities!!
Is your phone broken? If not, definitely tank. If so, get the tank and a $50 dumb phone (actually I think the dumb phones cost more than smart phones anymore. You can get a cheap smartphone at Walmart for $40)
Tank mate, i dont care about my phone its only for taking pics of my tanks anyway lol maybe even try something new like a marine set up thats what i did for my 3rd tank or maybe even a brackish im itching to do another set up with a figure 8 puffer i am already visualising haha
You can get far more entertainment and education and longevity from an $800 fish tank than you can with an $800 phone that's obsolete in 2 years. Cost-benefit analysis says fish tank all the way. Non-cost-benefit analysis says fish tank all the way. $800 on a phone is insanity (says the girl with $150 smartphone and Cricket service. I don't get this iPhone thing.)
Whenever I upgrade my phone, I get the previous years flagship or similar.
Even though I seem to live on my phone, there is no way I can justify spending huge amounts of money on buying a phone outright.