I'm do for an upgrade now and I would really like to get a new phone asap. I currently have a Galaxy S and I'm really torn on which phone I should ultimatley get. The maxx HD only draw for me is the awesome battery life which would be awesome and very nice to have. I'm always paranoid of running out of battery and charge my current phone several times a day.
The S3 though is .1 inch more screen with 1gb extra ram over the HD. I think it also may be better at taking photos, but im not sure.
Then of course the S4 which would be awesome, but the big negative would be waiting another 6-8 weeks and paying the premium price to get the phone.
So right now i'm kinda leaning S3 just because of the slight chance it will be more futureproof than the HD and probably cheaper now with 4 coming out.
Pretty much anything right now would be a massive improvement over my current phone.