I always say start small. You don’t know if you’ll continue to use it on a regular basis. A Wacom Intuos simple cheap one is great, works perfect and I’ve had it for more than 10 years. Kent has always said the same thing, he had one of those for 10 years and he sculpted perfectly with it. After a while if you get deep into sculpting and you think you’re going to go super pro, then you can consider buying one of those super expensive ones, but right now it’s an overkill for any of us I think. And you get the benefit of starting small and if you make the change to a professional one, you could be really be able to tell the difference and appreciate it, since you’ve used a simple one, you would be able to tell the difference and if it’s really worth it.