MHN reminds me of a Winstrol like compound, I've used it once and have seen it used by a couple of guys. After about 10 days to 2 wks, I started feeling a very hard, dry pump, much like the pump from Winstrol. Interestingly, MHN is a 19-Nor based compound, like deca or tren. I have not used it in contest prep, because I haven't wanted to experiment with combining 2 different 19-Nor based drugs during the last few wks of dieting. I do like the idea of adding in to the last 6 wks of a longer cutting cycle, using test and Masteron. This way, you would be using one of each type of steroid, a Test, and DHT and a Nor. It may prove to be more beneficial than using Test/Mast/Winstrol since Mast and Win are both DHT based. I found that 4 tabs a day was enough to get a good hardening effect. I'd be interested to move that dose up just a little, to 5 or 6 tabs, but if cost is an issue, 4 will give you an effect. The cycle I'm thinking of would look like this :

wk 1-10

Test Prop

adex as needed

3-10

Masteron

Then adding in MHN for the last 4 to 6 wks

PCT would follow 3-4 days after your last injection of Prop/Mast