Need advice on Rolex Oyster Perpetual: 15505 vs 1500 vs 1601

[DandyAndy]

New member and newbie hoping for some help with what will be my first automatic swiss made watch.

I have a tight budget, around USD 2000 (incl. freight/taxes if I buy from overseas), so keep that in mind.

These are the models I've been looking on so far which is within budget:

- Rolex Oyster Perpetual Date 15505 Goldshell (Quickset) with automatic cal. 3035 movement from the 80s (running good, great condition but some scuffs on bracelet, serviced last summer, no original papers/box): Total price: USD 1800 - 2100

- Rolex Oyster Perpetual Date 1500 with satin dial and automatic cal. 1570 movement from the 70s (running good, great condition, has not been service for the last 3 years, no original papers/box): Total price: USD 1600 - 1800

- Rolex Oyster Perpetual Datejust 1601 from the late 60s (Great condition, not sure when serviced last, Rolex papers and tag, no box): Total price: Approximately USD 2000 (Import)

All of them have original Rolex bracelets, and are genuine Rolex.

What do you think of these prices, and which one of these watches do you consider to be the best buy?

The other watch I am considering per now is Omega Seamaster 300M Automatic from around 2003-2004. Average price for a preowned is around USD 1800 for one in great condition with original box and papers.

Hoping to get some feedback!