Hi, I just signed up for MacRumors now, so apologies if anyone has inquired about a similar issue to the one I'm having, but any advice is much appreciated! I currently have an old MacBookPro that still works great but is running on the old Tiger. I'm a designer that can't afford the Adobe CS5, otherwise I would upgrade to the Lion as I've been told I can. BUT, unfortunately, I own CS3 and CS4 and use both as they're each different suites: one design, the other production. I've been worried about upgrading the osx due to potential compatibility issues and so far haven't run into many with the Tiger. But, I have noticed some issues with the CS4 suite and my online web browser/Firefox require upgrades that Tiger doesn't support. Overall, I do need to upgrade my Tiger, for instance, my iPhone4 doesn't connect with Tiger. So with the situation I've explained here, does anyone have any advice on what OS I should or can upgrade to? Is it Snow Leopard or is Leopard recommended? And if it is Snow Leopard, am I able to upgrade directly from my Tiger or do I need to upgrade to Leopard first before doing so? I'm pretty clueless here, so ANY advice and help would be so appreciated. Thank you much!