My advise is, keep the SiR. Unless you are going to consider a
more powerful car, like the Type R or something. Or, the least you
can settle on is the Vti-S manual, which had reasonable power, but
can't compare with SiR.
Yup, its a pity that SiR is no longer in production, and I would
gladly like to own one as well (Manual one), even if its 2nd hand.
But then, its just too expensive and not worth it.
If my memory never fails me, the SiR manual should have 170bhp and
the auto 155bhp.