TASCAM DR-70D by szegedin
Before you buy a Tascam field recorder, you had better take a look at the "sold" listings on ebay, and look at had many defective units are out there. My DR70-D failed after less than a year of light use. You will find that this is very common -- not just with the DR70-D but also the DR60, DR40, DR100, etc.
Tascam is producing very low quality products and dumping them on the market with 90-day warrantees. The scam is that you can't buy a longer warantee, and it can cost you upward of $144 (in my case) just for the parts to repair the unit. The chances are very high that your unit will fail very quickly, during a shoot. Then you will take a burn on the shoot, take a burn on flipping the defective DR70-d, and only then go and buy a SoundDevices unit that will last. There is a hole in the market for a field recorder that is built better than the Tascam (@$250) but still cheaper than the SoundDevices (@$1000).
Most of the reviews are positive, because people who get burned don't bother to post reviews, they just want to put it behind them. This is obvious because dozens of defective DR-70ds have been sold on ebay; one guy was selling two batches of six of them. So be cautious about the "everything is awesome" bias of reviews.
If the quality wasn't so shoddy it would be adequate for the price, but you have to ask yourself, do you feel lucky?