Nice! Yeah, I feel like if you want to have a comic with heavy amounts of text, perhaps a comic isn't the best way to tell your story. An illustrated novel or comic prose are much better formats than tryiing to cram it all onto a tradtional comic page. 
...Yeah, for whatever reason thick vectory fonts mashed into a bubble really hurt my eyes. Several lines of a bold font in a perfect circle just turn me off to reading a comic.
I guess if I had a preference it would be wide bubbles with horizontal text placement. It seems more natural to read that way. That's just my honest opinion though. XD