In my opinion, panthers and vieleds are almost equal. I have both, and although there care is different, they are both hardy. I personally started with vieleds when i was 8 years old. I had no idea what i was doing then, and regretably, the animals died in about a year. About a year after that, when i knew what to do(as far as care), and had the responsiblity to do it, i purchased a sambava male from Liddy Kammer. I now have another pair of vieleds, and they are great to. Its really personal prefrence, i preffer panthers, just because thier personality, and thier beauty. Vieled is usually the way to go as a novice, and they are a tiny, tiny bit aisier to care for.
Hope this helps,
-Jake