I've ate a lot of grain fed NOMO deer and plenty that have lived on acorns and I can't see where there is much difference in taste. Of the hundreds of deer that we've messed with over the years, I can think of three that tasted funky. Two were 4.5-5.5 year old bucks and one was a stunted doe (long nose but small body and had a fawn). Not sure what was up with them, but they had a "wang" to them.
Dad and I usually harvest 10-15 deer between us each year so we've dealt with A LOT of deer over the years. We always process them ourselves. I've seen how several other people handle deer after they are killed and I'm not sure I'd ever take a deer from them if they offered. I think I'd be eating more hair than meat!
I could eat the following venison treats/dishes every day of my life and die happy
1) jalapeno pepperjack sweet bologna from 5H Meats in Hermann
2) our homemade jalapeno cheddar deer brats
3) a hind quarter roast crock potted on low for 8-10 hours in Louie's Italian Beef seasoning, shredded and put on a bun with banana peppers and provolone cheese
4) a backstrap seasoned liberally with Greek seasoning and grilled rare-medium rare
5) thinly sliced backstrap stir fry with peppers, onions, mushrooms and broccoli
6) venison jalapeno poppers (sliced backstrap, chive and onion cream cheese, jalapeno slice, bacon,)
7) spicy chili with ground venison, shredded cheddar, hot sauce and sour cream
8) carne asada tacos