I would buy a used IC-706 or a FT-857D. You can always turn down the power. Your apartment antenna will be at best 30% efficient as a regular dipole. Other hams can run power but if they cannot hear you they cannot work you.
Another thought is buy a used IC-7000. All of these radios come with filters. The DSP on the IC-7000 is very good.
Please tread carefully if you go with a used 706.
Parts for the 706 are getting scarce, and the Final PA transistors
for plain 706's thru the low serial number MKIIG's are Unobtanium.
Neither from the device manufacturer nor Icom, nor, well.....anywhere.
And there is no suitable drop in replacement.
(Last time I checked a few years ago.). Sorry, I've forgotten that serial
number cutoff, but it shouldn't be too difficult to research.
I bear no truck with the 706 Series, it's quirks are well documented,
but it fit my needs at the time......until the ex-
buddy who I leant it to
burned out the finals while working 40m phone into a very short mag mount
CB whip on his truck....and this after he had given an expressly worded "blood oath" that he would never operate mobil with the rig......Eh, forgive and forget. (THAT took some time. I'll
never lend anyone
a rig again... but I digress........)
redesigned the PA board mid-production run
on the MKIIG's....with diferent PA devices. The "new" PA boards are
not backwards compatible.
(Been there, done that, got the T shirt and everything,
had to sell it for parts).
I cannot speak for the 857D...though they too are getting long in the tooth.
However they do have a solid loyal fan base.
If I were going to go the "Small 100w rig and turn down the power" route,
I'd pick something newer (as K6AER suggested) if I had the jingle.
GL ES 73, Ken AD6KA