3 way links vs linkwheel- what service to use?

Hi.
I'm in the process of building websites and making good progress. I already earn a full time living online (selling physical products) and am now getting into internet marketing. Needless to say, I have SOME money to invest in tasks I don't care for like article writing and backlinking, but I also want to make sure that I'm putting my money to good use. Let me get to the point. I was introduced to 3waylinks(dot)net and it was suggested that I start with that while I build up my websites to get some links coming in - and then I should promote more heavily the ones that seem to be the most promising. At $47.00 a month, it seems fairly reasonable (especially for up to 50 sites) but I also found automatedlinkbuilding(dot)com
It looks like basically the SAME system for $7.00 a month. What am I missing here? Is one better than the other? Does anyone have any experience with this? The other thing that worries me is that if I sign up and then CANCEL the service, I LOSE all of my backlinks (since I'm basically on a network) which makes me think that maybe I should hire a link building service like linkwheel(dot)net to give me some more "permanent" links. As I said, I'm really new to this all and am overwhelmed with the amount of options there are. I really want to know that I'm investing in something that will work and go for it. If anyone has experience with any of the 3 services I mentioned, I'd love to hear opinions, pros, cons etc. Thanks so much!
Daniel