hello... i already own a pair of Neumann TLM103s that I like very much...
I
am looking to get another different pair of large diaphragm condensers to
compliment the TLM103s... use mostly for drum room and other all purpose
room stuff.... would like mics this time with multiple switchable
patterns... how about the Neumann U87i or U89i?... how might these be for
drum room (loud rock often), and how different are they sonically from
TLM103s?... what about other Neumanns such as the TLM193, 170, but my
guess
is that all the TLM series neumann mics may have very similar sonic
characteristics and I already have the TLM103s... and what about the AKG
414
TLII?... all input appreciated -j

You've already got the most versatile Neumann LDC they make, so unless
you're buying your 4th or 5th LDC, I'd stick to the more versatile ones from
other companies. The Rode NTK is widely considered one of the most
versatile LDC's out there especially for the cost, and the new K2 offers
variable response patterns. While I haven't tried the K2, the NTK is easily
on par with the TLM-103 yet different enough to offer the alternative you
seek without the limitations of other Neumann LDC's. For example, IMO a U89
meets the performance one should expect from its price tag only for certain
vocal types. And the 414 I only find good on non-steel stringed
instruments, from classical guitar to violin. I've used it on vocals only
where an earthiness was desired (twice).

My advice is to stick with the budget versatile performers until you know
exactly what specific needs you often have, then find the high-end mic that
fits that bill.