Although most ibanez necks are way thinner than other industry standards, the Super wizard is the thinnest & it’s a personal interpretation whether thin=fast. Some find thin necks virtually ‘cutting’ through the fretting hand over prolonged play. I thought I’d given up on the Super Wizard neck until I tried the current Prestige range. These necks have an extra finishing process applied to it that makes it super smooth + addictive. After 10 guitars, I just have to add the RG 1550 as number 11…
Personally, I’d suggest you check out the Ultra neck profile instead (eg: RG 1620), the neck is still thin but it has a very ‘grab’ friendly feel, that makes lower & upper fret access very pleasing.
For ibanez’s interpretation of ‘chunk’, check out the RGT42- one of the fattest neck in an Ibanez RG series.