#1
im thinking of getting a Vox Tonelab le or se.

im just not sure if it's worth buying one of them as far as sound sensitivity, like can i really get finnicky with my tone with this thing.

i play mostly all types of metal, some good ol rock n roll, and som clean stuff.

probably gonna be putting this thing through my Spider II 210.
#2
The tonelab is generally a pretty good unit. There's absoloutely no point in putting a modelling pedal through a modelling amp. Especially the spider, your just going to be piling effects onto it and making it sound more digital and compressed.