If you talk to various contractors, the general preference for air-con is Panasonic. Somehow they shy away from Mit due to parts availability issue . I have 4 wall mount and 1 casement in living room, all Panasonic. So far so good.
Reno cost in JB is way lower than SG. RM300k buget can do lots of things. I won't say mine is show room standard but it was done up with proper 3D design prior to actual work. All the essential fixture such as wardrobe (4 rooms), kitchen cabinets, counter, island, TV console, bed board etc, furniture, electrical appliances, TVs, bed/mattress, basically complete living condition and I am able to do it below RM200k for a cluster house.
The cost can differ a lot between contractors. I can get quote as high as RM250k and as low as RM150k. Selecting the contractor is tricky but I am thankful that I got a good contractor who get the job done and has many lobang in getting good furniture and electrical goods. In fact the fridge and TV is so much cheaper than SG price.