Buy blog posts and links but first find the reason of penalization the big private networks.

Depends on where you buy them from....

If you buy it from another webmaster in the same niche as you

I imagine it would work out pretty well

Buying links still work, you probably just don't want to be buying off places that everyone else is buying off of (ie popular private blog networks etc).

Use a link broker that connects you to individual webmasters that only sell a handful of links. These are still very effective, and your chances of getting destroyed by the Big G is next to nothing when purchasing from individual webmasters.

Free submissions seem to be the way to go after Panda, the paid ones are usually the ones that get laid off or penalized in some way or the other.
Also focus more on the quantity rather than the quality

It is OK to buy nothing, just focus more on quality rather than the quantity of things that are happening and there are slim chances of your site getting punished.
Panda is all about quality content

you can also buy in this new pay per post network : postsgenius dot com
where you can hire bloggers , buy or sell blog posts , market and increase traffic to your sites! this site was really very helpful.

In SEO always keep in mind that quality is the success not quantity, because google give preference to quality backlinks not quantity backlinks.

Buy contextual links on related sites with authority.

Paid posts still work fine for me. I've been using it for 2 my projects, and none of them was banned. But I do strict manual selection of blogs and rotate link anchors.

My experiences with well known networks is keep away from any organized network period.

Google will find them and penalise them and you and your sites.

Don't waste your money or time with anything where others' are doing things you don't understand or know about behind the scenes.

You have to buy 'off the radar' links only.

Watch to link are quality and relevant to your niche.

Nope, instead of spending your money to buy links and blog post find a quality blog that accepts guest posting.

If the blogs where you want to get your post featured have good quality and unique content, there should be no problem. Make sure that each blog post has a unique content and don't waste time in spinning blog posts, its not worth the effort now days. A good blogger will feature your blog post and provide a link back if you have good quality content. Also do make sure the your blog post is featured to the site in the similar niche.

Google loves natural development of website, when it get backlinks natural is the best way to get website on good position, quality and relevant links is the key of your websites success.

Call me cheap/tedious/stupid.... I would rather manually get the links... At least I know where they're going...
First post FTW