to start with
i also have the THF6a
as well as Icom T-90a
and the 91 AD
the one i like least and use least is the thf6a
i love the T-90A but have not used it much since getting the 91 AD
i use the 91 AD with external mike
with a high gain dual band antenna
it has very strong audio and works very well
from street i hit a repeater 65 miles away (on 5 watt setting)
although the repeaters antenna is at 800
ft height
what i like of the 91 AD
supper easy to use
supper easy to program analog (a bit harder with DStar frequencys)
if you get the programing software is super easy to program everything
For Dstar i
am not going to say there are countless people on them
but i do talk on it daily (but then in nyc we have some rather busy repeaters)
talking analog verses DStar takes a little getting used to
it is like a cell phone in that
older analog phones faded in and out of service
where currant digital ones if you are in range it is 100% if outside range is nill
another feature many like is
typiclly
HT's skip from 200 to 400 mhz
where the 91 AD (not sure about the 92 AD) gives full coverage from
hf through
uhf
another thing i was amazed at
is though all
HT's are made and designed to work on vhf to
uhf
i have been able to easily copy many
HF transmittions
on the downside is the battery
is 1300 mah and would think it would be suitable
is good for 5 hours analog (rated by Icom) and 4 in DStar more like 4.5/3.5
i easily get around this by having bought (for $60 or 65) a battery rated at 3000 mah and get use for couple days easily (got it from w and w batteries of long island ny)
want to know more just ask me