Participate in a group buy. USB miners won't ROI, and unless you have the thousands you need for your own miner, you best off share the exposure with others.
Group buys seem extremely risky to me, why not cloudmine instead where you can at least be in control of your own hashing?
I should mention that the ROI on both is crap, just asking.
The pricing is closer to at cost on group buys, whereas cloudhashing is very overpriced and require contracts. With bitcoin prices going up, many GB can ROI in USD. If you are looking for USB miners, check out
http://minersource.net/I'm not looking at all for USB miners, this isnt 2011. I'm saying that a good amount of previous group buys have proved out to only benefit the individuals organizing the group buys and not the general share holders. I think that individuals like you providing dis-information to the community is a very toxic thing to bitcoin growth as a whole.
At cex.io as an alternative example, the prices may be above current roi but at least your in control of your own portfolio,can sell hash as a trader and there are no contracts. I see most group buys as one of the riskiest things you could do in bitcoin.
Full disclosure: I have no interests in cex.io, think their pricing is still far too high to invest in, I'm using them as an example here. They are a risky choice but far better than what these shills would have you take part in.