Most of sp's mods are unprofitable and unpaybackable (of course, if you haven't over9000 rigs with 8x titan xp) - 0.05 btc now = 600 usd. But and with few rigs you can take extra profit somewhen. At example, for me this is spreadcoin (which gave nice extraprofit for few month) and signatum (seems, anyone who began mine it with sp mod from beginning take a huge boost on cash).

Of course, if you have only 1-2 rigs, seems better mine with opensource miner. But if you "semi-professinal" - you can try "buy them all" and in result with some sp mod you and return all your investments, and take good profit.