Ok I am going to take a crack at this, because I only see one thing you can do.
Since all three pages have a different number of backlinks, and you only have a couple full service clients, why don't you work on building backlinks for those clients, and not your other clients? Backlinks are an important part of off site optimization, but building backlinks isn't as expensive as you think, I have some service if interested (legal services
) but that is really the only thing you can do different to each website besides the PPC, which can get expensive REALLY Quick.
As far as the brand building, i have a lot of experience with this. Before I took over as internet marketer, we (softwaretech.com) were getting around 600 unique visitors to our site per month. I suggested that we give our whole company a new look and feel, and it seems like our customers responded. We redesigned the logo, our stationary, our website, and the feedback has been tremendous, along with the optimization that I have done. With all that, we have hit 3,000 unique visitors a month and working on 5 this month.
I feel like you don't need to spend so much money on PPC if your site is optimized for the search engines. We get our main traffic from keywords such as time and attendance software (number 1 - 3,200 searches monthly), attendance software (number 1 2,800 searches monthly), and this has worked for us. I would say concentrate on a few major, long-tail keywords and start building backlinks.
Not only that, but we included a blog which gets around 1,000 unique visitors per month and is steadily moving up the blog rankings. I think that the blog gives your website a more personal feel to it, a face almost. I feel like it's almost a must-have for any website now-a-days, and it's easy to maintain.
To sum everything up, build your backlinks to the sites that matter, don't overuse your PPC, and get into blogging - but don't forget to comment on others blogs (also builds backlinks if the blog is do follow).
For any more information, just PM me. Hope this helps!
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