My last day visit to my AD and a question

[RONeb]

So
Last day I was in Tel Aviv (A big city in Israel) and went to some nice AD
He (well it was she in fact ), let me see and try some nice Rolex's
I tried the ones I love more , the Sub, Sub LV and the Explorer 1 (The only other I really love is the SD, but she didn't have it, some one just got it I guess )
Any way
I have a not so small hand but yet not very big (some thing like 7+ but smaller than 7.5)
The Sub looks really nice, and wear nice, but the magnifying glass just don't do it to me
I have tried the Explorer 1, and BOOM, man it was like the first time in my life I wear a watch, and it feels so good on my hand, but I feel like I wear nothing!!
Also, don't know why, but the bracelet of the Exp just seem much better to me
And the look - I love way more the "clean" look of the exp!! (kind of hard to explain till you see it live)
Also she was willing to do a 10-15% discount for me, so I can get it for a really nice price (as for a Rolex)

So, now I have two problems with it
First
I always used to have BIG diving watches, and for the first time should I get some thing that isn't a dive watch?
Second
it doesn't have a date, is it that dreadful ?!
And third
How reliable is the watch? I am a "hard" man with my watches, and this one seem very "dressy", won't it fall apart ?
and last
it is only 36mm , isn't it to small ? I mean it sure feel nice, but I guess you know the problem, I am used to watches with 42mm and more, so I always thought I will pick up some thing like the 40mm sub, and not a 36mm Rolex

I am in a dilemma now should I pick this one or the Sub ?
(also, at least here in Israel most guys that own a Rolex, don't have the EXP, and all my friends are much more charmed with the SD and sub)