Logic Studio - Space Designer

[Jewish Guitar Hero]

I'm currently using Logic Express 8, which I'm digging, however I want to start playing around with convolution reverbs.
Should I upgrade to Logic Studio for Space Designer, or check out some 3rd party plugin?
Also, any opinions on the other benefits of upgrading to Logic Studio?
Thanks

[Vogon]

If you don't mind some tweaking, this is a way to get a free AU system going:

SonicBirth comes with a convolution reverb:

http://sonicbirth.sourceforge.net/

[rwc]

Space Designer is the best plugin reverb I've ever used.

Hell, best reverb I've ever used.

[Jay Reynolds]

I haven't used Express in a while, but I don't think it has plug-in delay compensation across its Aux channels.

[Vogon]

Space Designer is the best plugin reverb I've ever used.

Convolution reverbs tend to "sound" very similar with the same Impulses, Space Designer is as good in this respect as the rest, but the best impulses IMHO come with Altiverb.
I tried Waves IR too and it's library's quite good (I don't use Waves though).