What can I say? I've clearly upset you and for that I apologise. It certainly was not my intention to do so.
As for attempting to have a dig at you - no, again, that was not my intention. My intention was to question your suggestions (and those of others) as to whether they added anything to the product - or were merely trying to over engineer a simple product and turn it into something much more complex and as a result of which - it would turn into something more expensive.
I'm totally not against spending money on good tools. Most of my tools are top end products from the likes of Metabo, so I'm certainly not after cheap tools. However, I still believe that the product in question is a great simple product. That if it can be improved - by all means improve it. But to my own mind, I cannot see how it could be improved, without it costing far more money.
Perhaps in my last post my sarcastic humour got the better of me, but I repeat that for example in the case of the plastic guide. I cannot see how it can easily be improved. It has to be cheap enough, because it will get worn. However, it only has to serve a few seconds use on each hole, so I really cannot see a problem in holding it using one's spare hand. As I said before, I could understand it being a problem if one was using a heavy drill perhaps. But if one used a small battery operated drill, then only one hand is needed on the drill - and the other can easily hold the guide. A small suggestion/improvement that I would love to see - but do not know how to implement would be to give the guide a non-slip backing. As my only (tiny, tiny) complaint would be that it can sometimes slide around, if one is not careful about applying the correct amount of pressure to it. But I really cannot understand the need or want - to stick it up on the wall using any method, since it only needs to be held there for such a short amount of time.
As for the sponge etc. inside the drill. Again, my thoughts on this are that if the sponge was made to fit, then it would become an accessory, sold at a price that would make it non cost effective. And if one was to make up pieces of sponge oneself, I can understand the reason for it, but I would think that the bit of sponge would simply get very blocked up with the waste matter - and need frequent replacing. Surely the point of the sponge is to keep water near the surface of the drill head. This could surely be better done by providing a spray of fresh and clean water by using a pressurised garden sprayer and simply holding the nozzle near the drill tip. However, its far easier to simply remove the drill head, dip it in some water in a tray/bucket - cleaning off the debris, then re-insert it into the hole. Since, surely having the drill head clean is the whole point. Cooling is also an issue I know, but as I said in my last post, from what I've seen and read the drill tip doesn't actually get that hot, compared to other drill types.
Sorry once again that by disagreeing with your ideas, I inadvertently upset you. It was not my intention. I do tend to write in a very blunt way (it has been noted many times in many forums) but I don't write just to upset people, I write what I think because I have strong opinions on subjects.
Paul