isnt Vnish asic.to? Been running asic.to on my s17s for over a year and love it.
Asic.to is a distributor for Vnish, just like AwesomeMiner, they all are legit and they all use the same firmware, you just get extra added benefits using them like more support from Asic.to or a great monitoring tool for AwesomeMiner.
The bad soldering issue to the heatsinks is no joke. There is now a popular mod going on where they replace those single heatsinks with large plates screwed to the pcb. This was a design/manufacturing mistake, but they just "quietly" killed this line.
The mod does not really solve the issue by any means, in most cases the issue is below the chip and not above it (bad pcb to chip solder, not chip to heatsink solder), however, using one block of heatsink on top of the chips makes "fixing" those miners a lot easier since it's pretty hard to troubleshoot the miner with all those heatsinks on, I see some people take out a dozen heatsinks just to find that one bad chip, so without a doubt, unscrewing 4 or 6 screws to get a perfect vision on all the chips is a smart idea nonetheless.