I just hate going into those watch shops if I'm not buying anything. In my mind I'm thinking they're getting pissed or something.
They are used to this and expect it, believe me.
I went between 4 to 7 times in the shops where I bought my high-end pieces, nobody EVER made me feel bad about it, they were diligent and understanding about this all the time.
But, because I was feeling just like you, after I bought my GO PML, I asked a clerk - who took care of me during nearly 2 months... - about it very honestly and brutally, here is how the discussion went (loose quoting on my part):
'ok, let's be honest mister, you were a bit annoyed that I came by 6 times to your store after sending multiple emails and took so much of your time to choose something, right?'
'oh, quite the contrary, I love to find the RIGHT piece, at the RIGHT price for someone, and you can only do it over a long period of time, look at this couple' (he shows a couple buying a Cartier tank covered with diamonds at the other side of the room, it's a large store) 'they just came in, and will leave the store with a piece. Is it cool for the business? For sure, but did the store clerk appreciated the negotiation/his time with them? Of course not. We not only respect people who take their time and come here multiple times before taking the plunge, we actually prefer dealing with them (...partly because they will not get back to the store after 2 weeks to change their watch because they actually prefer another model they just saw on the internet....)'
(of course, you could argue that the guy was just nice to a customer, which I understand, but I know the guy for 2 years now, and I promise you he speaks his mind
)
So, please, whatever the store, if it's a good AD, don't feel bad about it, if anything it should be the other way around, you should be proud to take your time and not succumb at the first blingy piece
Just my $.02 based on my personal experience, of course.