Since we're in a state of flux while we decide how/where to set up our next shop space we probably won't have another sale until the Holiday Sale in December.
The Purpleheart Lost Dogs are a great value and most of them aren't cracked and probably won't but like the description says it's so prone to it that I just decided to list them all as Lost Dogs so buyers wouldn't be surprised/disappointed if it happened. They do have the SC1 core which takes a few more minutes to heat up fully vs the SC2 that is now standard but most don't consider it a huge deal. They do run quite hot (as do pretty much all our current vapes) so will need to be used with the included Travel VVPS or another voltage/current reducing device. Oh, and to answer your question the cracking (if it happens) is cosmetic and not something that breaks the vape or anything.. not structural.
Alternatively I think we have a couple Figured Walnut Specials left from the sale and Underdogette could probably set you up with one of those for maybe $10 more than the Purpleheart if you wanted. They have the SC2 core, also run hot and also come with the Travel VVPS. No cracking concerns there.
Hope this helps! If you want more info just send Underdogette a message and she'll get you sorted out.