Installing Leopard 10.5.x on an older Intel Core Duo based Mac Mini

I have an opportunity to purchase a new in box Intel Core Duo based Mac Mini (last years model), seller is throwing in a sealed copy of Leopard 10.5.x and says I can install it, but I'm wondering if someone can tell me how well Leopard will run on a Core Duo. Would it be better to stick with the pre-installed Tiger on this hardware?
Are there any pitfills to running Tiger vs Leopard?
The system would be for my wife who is most interested in iLife 08 apps. Can the Core Duo based Mini handle iDVD and iMove well?

Hi
I am using an imac 20" with an intel core duo processor. I was also told leopard would run fine on that. For me it does not. I installed in April and immediately had frequent crashes and freeze ups. I have been using macs since 1987 and never experienced so many problems. I did everything I could think of to solve the problem - clean erase and install, upgraded to full Ram capacity, upgraded to Iwork 08 and Ilife 08, turned off all wireless. Tons of time and extra expense. NOTHING made a speck of a difference. I finally called Apple support. They went through various software and hardware tests, including a new archive and install. It actually crashed twice while I was on the phone. My rep enlisted the help of a senior person, who told me it was most likely a hardware issue, even though all hardware tests he ran with me while on the phone were fine. He said it was not a leopard issue, and I should probably take it to a service place - at my own expense of $350 to look at the hardware (as I no longer have a warranty). I said first I was going to downgrade to Tiger, because I really did feel that Leopard was the problem - after all, these only problems started as soon as I installed leopard (he said that was just a coincidence). I said if the problems continued while running tiger - then I would go to a service location.
GUESS WHAT? I have reinstalled Tiger, upgraded to 10.4.11 and it works beautifully. SO I am convinced that the problem is the intel core duo processor - everthing else was ruled out, with the help of apple themselves. Ilife 08 and Iwork 08 run better than ever (I have 2GB ram installed)
My suggestion to you would be stick to tiger, at least for a while. There is nothing on leopard that you really need - it is much prettier and has more bells and whistles and takes more memory, but in my mac experience, tiger is the most stable OS ever - I am delighted to have returned to it.
If you do decide to upgrade to leopard - go for it, but don't struggle for as long as I did. If you notice problems, just go back to tiger. After reflecting on the experience, I believe Apple knows of the issue and is simply not going to invest in debugging an older processor model - I definitely got the feeling that the support people would rather I believe my Mac was about to die, and get me thinking about purchasing a new one, which would solve the problem completely.
Sorry for the long post - I am new to forums
By the way, my imac also runs idvd well.

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