I've re-furbed many old chisels and planes,, and think that there is much much time saved in having a new flat on the back chisel(s). If money is an issue,, then refurb is a great option, provided you have a meathod of flattening the back.
Look out for big pitting (large rust pockets)
I'm running a 1 1/2 barr framing, a 2" Bevel edge sorby and my veritas block plane daily. They are easy to sharpen,, hold edge, and a pleasure to use. The wages lost on them are long forgotten,, since they will be my employ for years to come!
Have yet to get my hands on a lee-neilson,, but might spring for a shoulder plane some day,,,,,,
my 2 cents.
dave