Sony PCM-D50, PCM-D1 or Sound Devices 702?

["Peter A" remoteportal]

Hello!

I'm very exited to start making nature recordings of streams, storms, rain,=
 crickets, etc., that are all very quiet and subtle sounds.

I've read all the reviews on Amazon and I'm just about ready to pull the tr=
igger on the D50.  However, I've read that the D1 is even quieter (a lower =
"sound floor") but it's 3x-4x the cost.

Money is tight but I want to buy the right gear the first time.  I hear the=
 Sound Devices 702 is the best but it's about $3K once you buy a decent ste=
reo microphone, etc.

I guess my question is this... is the D50 "good enough" to get into nature =
recording or is the D1 and 702 just so much better to justify the greatly a=
dditional cost?

Pete