OLD Wellers are very good. The new one are just cheap irons trying to masquerade using the Weller name.
The recovery time of the Hakko is far superior to Weller. This is of particular importance if you do a lot of
repetitive soldering, or a lot of soldering involving heat sinks or ground planes, or such.
I have found that the heat up time, and temperature regulation, of the Hakko are first class as well.
While I would not trade my Hakko for anything, if you do not do a lot of soldering, the Hakko may be overkill for you and your budget.
The one great thing about the Hakko is that it will be a one-time purchase. You will not find yourself needing to replace it in a few
years because it wore out or stopped maintaining tip temperature. A new tip now and then is all that you will need for YEARS of faithful
service with the Hakko.