I was planning to get one, due to the simplicity of washing the filter with water and sun/wind dry...

Pros:
1. Due to the "bigger mesh holes" more air will pass thru and engine gets more oxygen to burn, thus making your engine response better...
2. Cheap cost to buy and maintain: DIY wash and wash anytime you want, using water... can wash every 5K...

Cons (in my opinion)
1. Due to the "bigger mesh", the filter is not as effective in catching dust and other small particles... thus more frequent engine oil change is required as more dust enters the engine....
2. Due to more frequent oil change, the cost of maintaining the engine is higher.... and with more dust, wear and tear could be higher... thus making it more costly in the longer run??

In the end, I went with K&N due to the proven track records and its "oil filtration" catches more dust and dirt than the SS Air Filter... moreover, cleaning can be done DIY with a cleaning kit (RM65 per set, can wash filter for 5 times) or wash at any retailers selling K&N (cheapest I found is RM15 per wash)...