is it a sig P8 or a sig P225? makes a big difference, as for one P6's manufac. before '89 have bad feed ramps that choke on HP's, after '89 the P6 has the same feed ramp as the P225, able to feed the most aggresive HP designs. also all P6's have like a 15 pound-ish trigger, as the P225 have a decent pull weight.
for one to not like sig, i dunno what to say to that?
so lets do a quick compare, the sw sigma which retail (msrp that is) for just under 500. and a sig P250 is listed at just over 500,
if one was to go with the smith in this case it shows a lack of handgun experience. not saying that to you poster #2, but there isnt a smith alive (being built) that can come close to a sig.
also make sure you dont get stuck with a european heel style mag release.
oh yeah and i own both of the aformentioned guns, and i bought both as used police trade ins. the sig i got is a 1982 import, and was already finished with a robar finish, and had the ramp already done (40-50 bux) by a local gun smith. and i also replaced the springs to make the trigger light, i did a trigger job in the smith too.
and honestly i like the trigger ont he smith now better than the sig, and i liked the sig trigger better than the smith after the sig got the trigger job and before the smith got its.
as far as practical apps. go, yeah the smith does give you a bout 50% more round count as the sig.