When i use a 2 in one shampoo it makes my hair more manageable.  Does any one else get the same results or is it just me? :-/

Not me.  There are usually too many silicones in the combined product and it leaves my hair flat.

Some of them are good. Some of them make my hair fly all over the place though. Like Pert. But I think you can take wax off a floor with Pert. Bad example.
But with most my hair seems softer and easier to manage. When I use them I still use a light conditioner as well though.

I don't find 2 in 1's to be conditioning enough. Because my hair is long and the ends are old, I need extra conditioning on the ends. However, I do sometimes use a 2 in 1 just on the scalp because my scalp likes extra moisture  :).

Candylips, consider yourself lucky! :-) If I use a 2 in 1 I look like there's a giant bush on my head.

Of course, in some cultures this is a sign of great power and sex appeal. Now if I could only figure out what planet they live on...

/Kate