Look
hereIt's a sub forum on the Friendly site, and it's all about advice on purchasing a detector. You don't have to join to read, but joining would be a good idea because you could post and ask questions. The folks there are mostly very nice, and there are some ladies there too.
I bought my machine locally, from a detector shop. I was able to try several machines before I decided. I chose a used machine, more high end but older, so a good price.
Choosing a metal detector is kind of like choosing an RV. It all depends on where you want to go, what you hope to find, how much you want to spend, and what really works for you. Other peoples' input is interesting, but it's all up to you. Probably your first machine won't be your last if you like the hobby.