but seriously the 5960 is great but it isn t fine in water I d definetly keep that YM blue which is a very versatile piece imho if you want some upgrade replace it w the SkyD t but a proper WR watch is important in any good collection The rest of your questions are based on personal preferences , I think a 5pieces collection is decent at least my final plan having not more than that in active rotation .My collection based on manufacturers omega,Rolex and PP and a mix of complications and so far i m happy with the path i did. Briefly my advice is to make a plan , don t make impulse buys you may regret tomorrow rather give some time to yourself and follow the route you ve set.