Hi Chrissy
You've made a very wise choice, but then I would say that :D If you are worried about the rumours about solid Cockers, please have a look at a new site devoted to
Cocker Rage which will hopefully dispel some of the rumours you've heard & put things in perspective for you (note to admin - not sure if you'll allow this link, it's not my site but I did design it :-) ) There is no reason why you should not get a solid Cocker if that's your preference - you just have to make sure you buy from a reputable breeder, but the same goes for whatever colour & whatever breed you go for :-)
There are many books on Cockers - a good "budget" buy is The Pet Owner's Guide to the Cocker Spaniel by Frank Kane. You could also try Cocker Spaniels Today by Joyce Caddy, slightly more expensive but a nice book or The Cocker Spaniel by Haja van Wessem. All of these are available online from Amazon books.
Jane