You're right missouri, there ain't a whole heck of a lot of info on these machines. I, like you, wanted to investigate these a bit more, but without any success. I don't know the difference between the IR models, but this is what I know....
No more Earthforce, no more IR compacts. Everything merged under the Bobcat name, but not all previous models made it into the Bobcat lineup. They merged the IR & Earthforce features into only three: B100, B250 & B300. All three have unique features unto themselves. You can check out the Bobcat homepage, but here's a quick look at the main differences that I've found.
B100 - 2WD; front wheel steer; larger rear tires; normal BH outriggers; more along the lines of Kub TLB, except it doesn't have a 3 pt. & 4WD; 31.5 HP
B250 - I believe this one is the same as the BL575 except in Bobcat white; slide hoe; outriggers move up & down; 4WD; 4 wheel steer; all tires same size; same engine as B100
B300 - typical BH with normal outriggers; 46 HP; 4WD; 4WS; same size tires
All are hydros, have Kub engines and have quick attach front buckets with auxilliaries plumbed. They appear to built like tanks - very heavy and with more brute strength than the Kub TLBs.
As for the BL370, it appears to be a smaller version of the B300, in that, it has 4WD, 4WS and a normal hoe. Not sure of the HP.
I know it's not much, but I hope this helps.
Also, I'm going to demo a B250 this weekend. I'll let ya'll know the outcome next week. I'll try to take some pix, if I remember.
bucky4
In the meantime, here's a couple of IRs on eBay:
BL375 - it appears to similar to the B250.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3803956761&category=41493&sspagename=STRK%3AMEBWA%3AIT&rd=1
BL575 - man this is a brute, 56HP!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3803790930&category=50902&sspagename=STRK%3AMEBWA%3AIT&rd=1