the only MINERS I would get now....for fun....ROI is a smile..but you won't get took on $$$ vs difficulty and what you will get back on your BTC or LTC investment in equipment.
Again the options on the link below WILL NOT ROI but fun toys. I've also included running a bitcoin node....they pay zip...but if you want to feel your contributing to the BTC network ...build or buy a bitcoin node. You like litecoin? You could do a LTC node or you could do both or just one or the other.
Myself..just something to keep the 'darkness' away when I have to shut down my KNC Titan Scrypt miners someday
(my setup
lostgonzo.imgur.comanyway link to another post on a MoonLander 1mh LTC/Script usb miner ($32 plus $6 shipping USA) and a Sidehack 8gh (you can over clock) usb miner ($25 bucks with $5 bucks shipping up to 3 usbs)
The Sidehack 8gh usb miner project is legit (I have 2 and one coming). The MoonLander 1mh scrypt usb miner is also legit. He is not doing a pre-order but is asking 2 LTC per stick to hold a place for his order run)
anyway link to post on this here
https://bitcointalk.org/index.php?topic=7216.msg13063898#msg13063898anyway ...you won't ROI but you won't get burnt on a high priced toy either. Again the ROI on these Units is a SMILE