Nooka, I think it's just personal taste. If we all liked the same, life would be very boring!
I like the show type lab, although not overdone. For example, I LOVE Ch Bilbo Baggins at Baileydale. Ive seen him several times in the flesh, both in the ring and at home, and he is just gorgeous (to my eye). As well as the looks, he can do the job he was designed for- he is a CH, rather than SH CH, having passed his SGWC . www.baileydale.co.uk/NEW_WEBSITE/Bilbo_Baggins.html
In fact I liked him so much he was my first choice for sire for my bitch's litter, however, andy and jo, being incredible knowledgable and supportive explained that actually his lines wouldn't be best with my bitches and suggested another, (equally lovely!!) dog instead, and they were with us with help and support every step of the way. (A huge advantage of using a responsible, knowledgable and experienced breeder, rather than the dog down the road/ your friend's dog)
To me, a lot of working types I see around when out and about, have "snipey" faces, hares feet, lack of double coat (which makes them look leaner- when my bitches are out of coat, they look several kg lighter). Not my personal cup of tea.
There is a fantastic description in Carole Coode's book labradors today, explaining why the breed standard says what it does. Sadly we are about to move house and its all packed away. As explained above she works and shows her dogs to a high level so knows what she is talking about- she needs a moderate dog that can do both jobs well. I had a quick google and I came up with this page- www.labradortraininghq.com/labrador-breed-information/labrador-breed-standard/ It's not as good as the other explanation but it's a start.
A lot of the working types now are from field trial lines- Ive been told this is a different sport compared to what they were bred for i.e. working all day- kind of like a 100m sprint vs a marathon. Hence, less need for solid strength and stamina, double coat etc, vs need for agility, speed, and drive.