Aftermarket throttle levers for HS142F

Hey folks, since the kit throttle on my build crapped out on me the other day, I need a new throttle lever. I'm looking at 2 and I'd love feedback or other suggestions.

There's the Sick Bike Parts twist throttle, does anyone know if the part that holds the cable end it actually metal? This:
http://www.sickbikeparts.com/catalog/product_info.php?cPath=25&products_id=156

I'm also considering another one of these, as I've already got one on a 2 stroke and I like it a lot:
http://www.ebay.com/itm/Throttle-Thumb-Assembly-for-ATV-Quad-Bike-70CC-90CC-110CC-125CC-M-TT01-/250324824599?pt=Motors_ATV_Parts_Accessories&hash=item3a4885b217&vxp=mtr

Are there other all metal, heavy made throttles that are built to last? Right now I'm leaning towards the ebay thumb throttle since I have one and like it. I'd prefer to be able to use something I can slide my own grip onto as well, instead of having to use an integral grip.

Also just found these: http://www.jnmotorsbikes.com/product_p/jnm1199.htm

Anyone used one?

Sweet, thanks for the feedback guys. I'm going with the SBP this time. Ghost0 said in another thread that the 2 stroke version is the same as the 4 stroke now, if I don't like it as much I can just swap the thumb throttle off of my 2 stroke. I don't have a lot of experience with twist throttles other than the short time I've got on this bike so I kind of want to try it out a bit more to see which I prefer.