By far, for me a rotary is more preferable for 'hardcore' detailing. You can go aggressive with it to remove the most severe of defects (that are correctable), or go as soft and as gentle as you need to get a perfect finish. If I plan to go far into this hobby and can only choose one machine, I would go with a rotary. Bigfoot or other large stroke DAs *might* be able to do the same amount of corrections (which I doubt it would be as easy or as fast as using a rotary) or *might* even be able to produce the same level of finish, but they are more geared towards for maintenance use. Anyway, a rotary is also more versatile with all the different size of pads and backing plates and extensions available to choose from so as to be able to tackle *almost* any areas at any angles and any curvatures.

My suggestion, if you don't have enough fund to get the Bigfoot and have all these plans/ideas in your head to get the paintwork orangepeel-less and 99% perfect with mirror-like reflections, you should consider the rotary instead of a DA. But if you don't have those kind of 'extremities' (or OCD as we call it) in your mind, a powerful DA like the Ultramate would also suit you just fine.

But....errr...saying that. You can always borrow one of my rotary if you want and when required. So a DA sounds good too......

So, am I doing a good job in making you more confused......    

Another confusing point for you: the Bigfoot is actually a rotary that uses an attachment to convert it into an ROB....it's all a big conspiracy I tell ya....but ssshhhhhh....

i am having a serious watermarks problem at my rear window and the rear bonnet. even with regular weekly washing, the marks is pretty visible. i reckoned this is due to the fact my parking slot is under a tree and tree saps is the main culprit..

based from this article,
http://www.autogeekonline.net/forum/how-ar...spots-hand.html

i think most are type 2 watermarks. this morning, i washed my car and spend extra time to rub-off the marks. the attempt is successful but takes too much effort and energy. my thumb and index finger still feel numb due to the extra pressure applied to remove the marks. anything better i can do to improve the condition without damaging my clear coat?

what is the advantage of RainX? AceHardware got it?