Heres some basic info on "oxavar" HMGear has this under the name Oxanavar. I have read quite a few positive logs in general on M4OHN. I believe JA used a 7a version that he was quite impressed with as well. As with a lot of the other new compounds there is very little if any long term data. The comparisons to var are pretty much just based on the purported anabolic to androgenic ration I believe which is a strech. All in all though as I said it appears to get pretty solid reviews most places. As one of the above posts mentioned many early batches of this stuff were bunk which resulted in a lot of initial bad reviews. Most are straigthened out now.
One other thing would be that the its being mildly androgenic due to no DHT conversion and no progestin issues are both very debatable.
Technical Name: 17a-methyl-4 hydroxy nandrolone
Description: M4OHN is an active hormone, it does not require a conversion to a target hormone such as 4AD Cyp. It is a Nandrolone derivative however the 4-OH group added inhibits a conversion to DHT (dihydrotestosterone) or DHN (dihydronandrolone) making this a mildly androgenic and highly anabolic compound. There is also no conversion to estrogen (Rubin et al. Endrocinol., 49, 1951, p. 429); or progesterone (McPhail, 3. Physiol. 83,1955, p. 145). Mg to Mg comparison M4OHN is 10x more anabolic then Anavar.