Asked about the newer version (Indy Evo Plus) in Cavers of Facebook group and here is what I got:
Yuval Sobolyev
Pros:
1. Unlike Stop, it really stops even on thin ropes (8.5-9mm)
2. Bobins are much thicker and durable than in the Stop
3. Panic proof mechanism
Cons:
1. The Bobins can not be replaced
2. Very heavy (480g vs 326g)
3. Auto lock can not be disabled
4. The mechanism that lock it close made of metal and tends to bend and get stuck in an open position