I agree mostly with what Northstar said, and I would say this is a pretty good description of how I feel...I like variety!!
Like Xokarmaxo, I "had to have" the watercolor, and I bought it. I was never much of a LV fan. And I have to admit I was very underwhelmed with it (especially given the cost, which IMO LV is way overpriced). I know...hard to believe someone doesn't care for the watercolor speedy that much??? Well, that's me!!!

The coated canvas is a bit thin IMO, there's no organization in the bag, and I have to use a shaper. I just don't think it can compare with my nice leather Coach bags at all. But then that's really comparing apples and oranges, and I admit that. Still, I have YET to carry that watercolor speedy!!

I personally like Coach for the value, and I like that I can spend $300 at an outlet and get one of their $1200 retail bags. Both companies are overpriced, and I admit that the resale value of Coach DOES bother me if I pay retail. However, I've been able to sell all my Coach bags and get all my money back or make a profit on Ebay. Of course I have not tried to sell those bags I paid full retail for or probably even PCE price. I was more of a bargain shopper (or rather waited) a few years ago than I am now. I have purchased more Coach than I should on retail, so I know this will come back to bite me in the butt one day! I can afford to buy both brands, but of course I would have fewer LVs if I stuck to buying more LV than Coach, and we all know I LOVE my collection!! I cannot exist on one or two bags...I find that very boring, but still I don't buy just for the heck of it. I buy exactly what I like, and I don't really care what others think!

I'm mostly into Coach at the moment...but...
As Northstar says, I'm an equal opportunity buyer and looking for a little variety with my collection...
My current obsession actually happens to be several LV bags! I never thought I would say that!! Last weekend I was looking at LV and NM, and I decided I would love to have the metallic Mahina:
http://www.eluxury.com/estore/browse/product_detail.jsp?id=11870335
And one of the Whisper GM bags, which I saw and LOOOVED in person (link below)!
http://louisvuitton.com/web/flash/i...AUPU?buy=1&langue=en_US&direct1=home_entry_us
And something from the Sprouse collection, probably this one:
http://louisvuitton.com/web/flash/i...AUPU?buy=1&langue=en_US&direct1=home_entry_us
I like unique and "in your face" bags...although again, while I love the overall look of the speedy, I'm just not that impressed with them IRL (especially for the price). I also like the Vernis and miroir bags, and the bright colors of the Vernis always catch's DH's attention.
This is a change for me because I have never liked LV that much, but I have an open mind. What I have to get over is that while I can afford to purchase these bags if I limited other purchases, I just cannot rationalize
ANY bag being $3-4k or over!!! That's just not me. I personally don't think ANY bag is worth that cost!! So it remains to be seen whether I purchase one of these or not, but I'm certain I will be buying a speedy from the Sprouse collection. I seem to be ok now for bags that cost under $2k. Of course, as I say that, probably in a year or two, I can rationalize the $3-4k bags...since my tastes (and thus price) seem to be escalating!!
Bottom line: You should buy what YOU like and what YOU can rationalize is a good and affordable value to YOU!! This answer varies for every person, and there is
NO right or wrong answer!!