heres a breakdown of the meziere pump.

http://www.meziere.com/ps-1128-1096-wp316b.aspx


the screws on the bosch pump strip very easily. your welcome to use any pump you choose. keep the extra cash you will need it for another pump. as for any pump failing the pump your buying is the very cause of the biggest complaint on this forum. just what i would buy to replace a known problem, the same pump again!
for me i have the cm30 and it works great. when i add my 3 gal tank i will add the meziere. just my 1/2 cents worth.