[scan-pa]

I have 2 sugestions for you.

Dedicated server w/ 4 Xeon 2.8GHZ CPU's & 2 GB RAM + 2 GB Swap Disk RAM + whatever size HDD combo you need.

Donations - if your site is so popular, then members and some guests will be happy to donate $$$ each month to help you cover the cost of runing your site on a dedicated server.

We had the same problems you describe, High CPU, High resource useage ect. on both a shared, high resource shared, and even a semi dedicated with max 6 domains, So I started a donation system on my site and have had no problems with gaining my monthly Goal, did this for 7 months and then got the dedicated server, now I have no problems running vBulletin w/ 10 mods, a wiki, a blog and photo gallery. and as of right now, the donations are still comming in to fullfill the monthly goal and expenses.

Were not even causing 1% server CPU loads with 200+ users on and 300+ guests and Spiders.

We even added a few more websites to the server to help bring in some more $$$ and have never had a problem running stuff on the dedicated server.

You should look into a donation system and then save up some $$$, then move to a good dedicated server and you will never look back.

Good Luck.