the new 1.4 will do FAR better than the VTech 1.4.
It does have loads of torque, certainly, just nothing like the 184TDi, but then you'd EXPECT loads of torque from that lump.
From all I've read the new 1.4 is a really torquey and punchy engine.
And there's a lot of trouble coming for diesel owners in the next few years from the whole N02 issue, as well as the issues with DPF's clogging up with short journeys because they take so long to heat up.
don't get too seduced by the torque - if I were buying today I'd almost certainly take the 1.4 150BHP version of mine. I planned to keep it for a few years anyway, but I reckon in 2 years the bottom will have dropped out of the market for engines like mine.
anyway - your call. Try them both, look at the
servicing costs, the on the road cost, etc - and enjoy whichever one you get.