Salmo - it sounds like you are having the exact opposite specific veggie type success from me. It's all so fickle. We should trade successes! Ha!

So this year, I slammed in my victory garden using those flexible fabric / cloth planters. They are super cheap compared to hard sided containers. Plus root structures hit hard walled pots and spin and spin till root bound. For some reason, roots naturally terminate themselves when they hit the fabric sides, which supposedly makes the plants stonger. They are cheap and easy. 15 gallon pots x 5 per bag for like $20 bucks total on Amazon. I got 8 (100) gallon, 8 (45) gallon, 8 (25 gallon), 10 (15 gallon) and 10 (2 gallon). I then bought 2 yards of Cedar Groove Garden Booster (50% compost / 50% manure), 4 yards of Pacific Topsoil Garden soil (50% dirt / 50% compost), sand, vermiculite, sawdust and every PH modifier and fertilizer known to man. From there, I custom built specific soils in a cheap plastic swimming pool to specially match the PH and fert req's for certain plants. For example, I did (6) 100 gallon planters with soil built specifically for potatoes (low, acidic PH + lots of potassium). It was a ton of work to slam in by myself in such a short time, but I'm pretty happy with the results so far.