Are any of the Matlab Toolboxes any good?

[EvilKermit]

I probably wouldn't be able to afford a lot of the toolboxes but are any toolboxes in Matlab any good? Here are the ones I'm looking at:

-Optimization Toolbox
-Symbolic Math Toolbox
-Partial Differential Equation Toolbox
-Database Toolbox
-Statistics Toolbox

Could you find cheaper or better products for these elsewhere?

 

[Dr Transport]

if you're a student the student version of MATLAB has i believe, all of them included in the box.

 

[nbo10]

I use the cftool toolbox a good bit.