I just ordered from brew and wine supplies, use winetalk5 in the promo code and save 5 percent.......the best prices with shipping I found.....ordered 10 5 gallons and 2 3 gallon carboys.
look in to Petite Pearl.....it sounds to be more balanced then the Marquette...plus the marquette seems to me a bit aggressive in summer months.....looking into the Pearls myself
there original name was the tomato gall due to there round red spots, now they call them tumid galls. various fly species lay there eggs into the leaf, and the larvae hatch and enter the vine tissue. and as the larvae feeds the gall forms around them.
dont think its phylloxera and if it is, its only leaf. that can be treated with a miteocide and is not deadly to the vine. But I really think you have gullmakers on the leafs.