I haven't tried the small ones, but I'm continually amzaed at the versatility of the C-1. I've used it both in the studio and live (the old bluegrass around one mic deal) and am very pleased with the sound.
>>I also have a Neumann TLM and I use the C-1 just as much.<<
I am not a fan of the TLM, so I can understand why you'd make that choice.
In 15 years of studio experience, I've found that there is no "best mic at X price point," there is only "does this mic sound good on this vocal/instrument in view of what I'm trying to achieve sonically."
Different projects, different instruments, different vocalists, different sonic objectives...to me these make most mics useful for a given purpose.
I spent a lot of time only using Neumann U series mics; I got kind of uppity about it. Now I use whatever works, even bargain mics like Rodes. In fact, the Rode NTK - a $500 mic - is the best sounding mic for one of the guys I produce, over a 414, U89, Blue Kiwi, etc. Goes to show that a full mic locker is a nice thing to have.