I've got it on Blu-ray and it's not bad... not as crystal clear as some of the later CGI animated movies but I think it's a marginal improvement on the DVD version.

It also depends on how big your TV is, if your TV's sub-40inch and you already have the DVD version, don't bother getting it.

On my 52" True HD, there is a noticeable difference between the DVD & the Blu-ray versions.