When you create new subdomain it has no value. It's like a new domain, however as it has no whois records some data can be passed from main domain, like domain age. In this case you need any aged domain, no point to waste money on high PR domains. I can recommend http://www.registercompass.com I did, but I didn't buy domains with high PR, it's too expensive. Instead I was looking for domains with links/keywords I want to rank. I redirect domains using registrars dns settings and I don't understand why ppl use cpanel redirects. You right. Creating page with content and then redirect it is absolutely ridiculous. URL shortner can not pass the weight of the link. It's just like replacing the URL in your browser's address bar and I know that many shortners work this way, simple redirect.