The only company selling miners to the General Public is BITMAIN.
No one has a product for the end user on the market or states they will be coming to the market, not one.
Both statements are FALSE.
Lketc announced a machine a couple MONTHS ago, ETA appears to be December, and they've always sold to the public.
In theory, SFARDS machines could be bought by the public, but they appear to be having major issues with the SF100 at this time and dunno when they'll actually start selling the next batch - there may be a few remaining first batch SF100 in the hands of dealers at insanely high pricing. SFARDS (as Gridseed) tended to prefer selling via dealers, and generally only did bulk deals when buying from them direct.
Innosilicon is CURRENTLY selling a Scrypt machine to the public, in conjunction with the remains of Zeus (reference the "farm boy" thread in this forum, appears intended to clean out their last stock of A2 chips), I see no reason they won't sell whatever miner(s) they come up with using their announced A3 (SHA256) and A4 (Scrypt) chips to the public when they start production of such machines, though they seem to prefer "dealer" sales.
Avalon is CURRENTLY selling a (badly overpriced and bulk sales only) mini machine based on their Avalon 4 series stuff. No clue about their future plans though.
hashlet was promoted as the best bitcoin hardware
Hashlet never existed, except as a scam promotion for a ripoff cloud mining scheme.
Many "cloud mining" schemes are legit - but they are often priced in such a way that the only profit made is by the cloud mining operation.
ere is again the reason to buy S5. It will give you a little amount of BTCs (about 0.02/day), and I boubt GPU or USB miner will.
NO stick miner will RoI - even Sidehack's neat little device costs too much to ever ROI, though it comes closer than any other stick you can currently get.
Most stick miners are flat out "lose money" at this point - not "won't ROI" but "cost more to run than they can mine" level.
S5 can RoI if you can get them cheap enough, or your electric is VERY cheap, but it's VERY iffy on RoI at this point under any scenario where your electric isn't free. S7 is actually a hair worse due to the MUCH higher cost, despite the much better efficiency - and it's starting to look like even the S7 will become unprofitable once halfing occurs, unless Bitcoin price kicks WAY up before that point or diff increases flatten out a LOT in the next couple months.
Hopefully upcomming competition will kick off another "price war" by the end of the year, when there is still enough time for a miner price drop to matter to the possibility of RoI....