I would wait if possible OP
Otherwise, I’d recommend the series 4 for a few reasons:
1) it’s much cheaper than the s5 right now, but the same Processor and design, unless you really want ceramic or titanium (titanium is really nice)
2) battery lasts a bit longer I’ve noticed on s4 vs 5. Not a huge diff but enough that it could be 2 full days off charger vs 1.5
I have a S4 SS and S5 titanium, and will be returning the S5. I got the S4 for about 40% the price (less than half) if you can find a similar deal, I’d get that because it’s *significantly* cheaper for a similar experience
Some People may claim the always on display is a must. I found it really cool but useless in practicality. I am in health care and the second hand is what has the most use, in the rare moments I need it. It’s not visible with the always on display. You can kind of see the display as well, but whenever you raise your wrist to see the screen, it works the exact same as any other Apple watch so it’s a cool feature but not really useful. Definitely a feature I’d like to have in general, but practically and functionally doesn’t make a diff
So to summarize, don’t get the S3
I would get either the s4 or s5 over the s3 if you need one now
If you can wait, just get a s6 as it’s around the corner