Have been to all the bushveld camps
I will summarize them:
Sirheni - lovely accommodation, peaceful, some units have good view on the dry river bed. Lots of game. Nightsounds are great. I agree, its in the north, my favourite part of the park.
Bateleur: One of my favourites! Also the smallest bushveld camp and I think, the oldest. The units are far apart and were upgraded a while ago. Aircon in the main rooms. You do not really have a view on a river/dam, but a lovely area of the camp infront of the units which is great for birding. Lots of game around the camp - birdlife is the best. It has a nice boma and birdhide. I love this camp!
Shimuwini - I agree, must be one of the most beautiful camps! The units are good, the rolling lawn and the dam infront of the camp is wonderful. No aircon, only solar power. I have seen lots of game from this camp including huge herds of ellies and leopard. Very quiet and peaceful.
Tamboti - not really a bushveld camp. But the tented units with bathroom are great. It is small and the tents are very private and isolated. You feel a bit 'lonely' there sometimes. The braai and kitchenette is on a small platform infront of the tent. Not all units have a good view, but it is very quiet and this camp is totally different from the others, with lots of bush, big trees etc.
Talamati - The game viewing is great here. Once experienced a herd of about 800 buffaloes at the waterhole. The camp is more 'open', but the accommodation is great and the camp is very peaceful. I thought that there was not a lot of privacy between the units though. Also good birdlife.
Biyamiti - This is a great camp, were there quite a while ago. It has a lovely view and is also, as all other bushveld camps, very peaceful. I am not sure if the units have been ungraded since I have been there.
I will choose Talamati, Shimuwini and Bateleur