I would opt for var if it's real. Unless you've had kidney issues in the past, then I would opt for winny. Winny I tend to worry about joint health.
Even though var has a reputation for being less damaging to one's health than many other AAS, I don't think this is necessarily true, at least for me. Real var that was scripted to me increased my BP noticeably - even at 25mg 4x/week and 12.5mg 3x/week. Upped telmisartan from 40mg ED to 80mg ED and BP was more less normal (117-123/66-76). Markers of kidney health also indicated they were being stressed fairly heavily. Don't think this was from chronic high BP, as BP was under control before cycle and I upped the dose of telmisartan as soon as it climbed. This was on 300 Test + the var + 2iu GH. Had only run the var for 3 weeks when bloods were drawn. Everything was from a pharmacy so doses were accurate.
I only share this because 25 mg on training days + 12.5mg on off-days would be considered baby doses of a safe steroid by many, but it had a noticeable impact on health markers for me.
To summarize - I wouldn't do 100mg of either