Mac Mini :: Is There Noticeable Difference Between 2 And 4 GB On The Mini Base Model

I'm sitting here thinking I made a mistake by being cheap and just upgrading the base model to 2 GB when virtually everyone else is going for 4 GB... I do realize that this is mainly because most people choose to upgrade themselves, and then there's no point in not installing 4 GB. The thing is that I don't think I would benefit at all from having 4 instead of 2 GB of memory, since I won't be doing any "heavy" work on it whatsoever.

I might use Photoshop now and then, but that's about it, and that works just fine on my current MacBook with 2 GB ram (white 2006 model). Also, my memory usage most often shows that I have 1,2 GB of free memory, which isn't even close to "maxing" it. I've been looking for benchmarks comparing these two configurations, but I couldn't find any. I know that it's quite easy to upgrade it yourself later, but I'd rather avoid it...