Each and every builder has had issues of one or another.
Best bet would be to speak to them all and to read between the lines.
Engine Tuner 2.1 gets my vote for VFM.
TBH i didn't have any issues with my block and if i was to do it again i might actually go for a long engine from Cossie.
So as i said it really depends on your budget.
Wuz....when do we get to see the Godzuki?