About Cintiq:
I bought mine used. You just need passion in watching ebay

Saw a cintiq 21ux sold for less than 500. But it is not the holy grail as a lot are thinking. I made a lot of good pics on a small Intuos. So many artists are better drawing than me on intuos.
About Pentool
You mean this bezier thing?
I don't even use it in flash.
Flash, the good times when it was own by macromedia and Adobe wasn't destroying it step by step, has the most intuitive way of line drawing and correction. And it's billion times faster than fiddeling with anchor points. Sure, this is my very personal opinion. But I searched for a good vector drawing program for ages. One that produce just a stroke, not a filled area. Flash MX 2004 is still best on earth. Specially for vector animation. Instead of an anchor point, you just, with your drawing tool active, press STRG. and you can correct those anchor point without even to care where they are. Like verve blending. I always want to blend like in verve with just pressing one button. Coool. Erase? Just another button. No, no! Don't hurry. Keep your active tool, just press an extra button and it's done!
That's makes verve so addictive for me. Not the canvas only is fluid,no! The major workflow is a fluid simmulation

This bezier thing is imho a dinosaur belonging to an old age of drawing and masking. It's nice to have as a BackUp. Nothing more to me.
Only in 3D space it really makes sense.
My personal opinion after drawing with vectors for over 20 years.
But finally, what is the use of that in verve? A line, circ, square tool makes sense for sure. The rest? Lazy Nezimi is filling the gap for accurate linework.