Portable DAT, but if you are using the more "walkman" style types (Sony TCD-D7 or D8) you will need an external mixer that can supply phantom power...
HHB used to make the Portadat in 2 versions: with TC or without TC. That's got all you need right there.
Fostex PD-4: 3 channel mixer integrated with a good transport. The PD-2 is rarer, mainly because it's older and didn't sell as well as the 4.
Next, lose the cheap omni. Actually, that should have been first.
Assuming you want stereo, you have a veritable plethora of options. Here's a few:
Shure VP-88. Point source. Not bad...until you have to crank the gain to get the really quiet stuff, then it's a bit noisy.
Sennheiser MKH 418. Point source MS mic. This will have to be decoded in post, but it can give you more control. Upside to this mic is that the M mic IS a 416.
AKG CK1x's with either 451 or 460 bodies. Whack the heads into a Rycote sphere for great coincident stereo atmoses.
Rode NT-4. I haven't used it. Some swear by it. Being a Rode, I usually swear AT them. Again, some kind of Zeppelin is essential if your going to be outdoors.
Schoeps Stereo Spere. Fantastic...but I wouldn't feel good about taking it outdoors.
Crown SASS. Various versions. Pick your own poison. If your source sound is closer than about 2' you can end up with a "hole in the middle" effect. I don't mind these at all, but they are a little bulky.
If you don't have good windsocks, you are completely screwed.
Assuming you may want to record to HD, Sound Devices 722 would be ideal, or a 744 allowing you to simultaneously record a stereo AND a mono.
There are plenty of other HD recorders out there. Deva, HHB, Aaton Cantar to name a few...
Your best bet is to hire this stuff from Samuelsons or another film hire joint, rather than having to shell out the big bucks for the good stuff.
Or you could just buy the BBC sound effects discs and be done with it.
Hope this helps.
Cheers,
Tim
[Edit: damn afterthoughts!
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