At some point, the law of diminishing returns becomes a factor and although newer plugins may improve previous ones, unless there is a really dramatic difference, I couldn’t be bothered.
Lounge Lizard has served me well for Rhodes and Wurly and I haven’t found any reason to replace it. I do however feed the Rhodes through the MXR phase 9 (the famous orange phaser) emulator in TH-U as I find it a significant improvement over the built-in phaser.