I have yet to find fault with 105. I've used everything under the sun at some point in my life (carnaubas and sealants) and 105 just does everything I need and nothing I don't, at a more than reasonable price point. I mean, it's glossy, slick, lasts a long time (5-6 mos), protects very well, sheds water/grime like a duck, and is easy as pie to use. Combine it with AW and I honestly don't know how you could do any better for the cost. I get more protection and gloss from 1 bottle of 105, plus 1 bottle of AW, both for less than the cost of 1 bottle of Zaino (which I think offers similar protection/shine characteristics and I used to be a big fan of a while back). It's a win-win for me!
Regards,
Mike