As l'v decided to slowly upgrade my custom loop, l have just done the Rad BI GTS 360 to a BI GTS 420 which l'm pleased with. So next is the Pump + Reservior soon. 
It has a good reviews by Martinsliquidlab+ skinneelabs > l like the idea of the pump flow being controled either PWM or either manually or automatically via MB core temperature, has any custom H2o peeps used one?
The MCP35X™ pump is a substantial evolution from the long establishe MCP355 series. It differentiates itself from its sibling by two primary features:
The pump housing: has been redesigned to provide considerably enhanced hydraulic performance; is compatible with multiple tubing options thanks to the adoption of the G1/4 port standard; can host an optional "built-in" reservoir,is also sold separately, and remains compatible with all MCP3XX series pumps.The motor: is now PWM compatible, allowing variable speed control thru the motherboard from 1300 to 4500 rpm
http://martinsliquidlab.org/2011/02/25/swiftech-mcp-35x-reservoir/
http://skinneelabs.com/swiftech-mcp35x/

It has a good reviews by Martinsliquidlab+ skinneelabs > l like the idea of the pump flow being controled either PWM or either manually or automatically via MB core temperature, has any custom H2o peeps used one?
The MCP35X™ pump is a substantial evolution from the long establishe MCP355 series. It differentiates itself from its sibling by two primary features:
The pump housing: has been redesigned to provide considerably enhanced hydraulic performance; is compatible with multiple tubing options thanks to the adoption of the G1/4 port standard; can host an optional "built-in" reservoir,is also sold separately, and remains compatible with all MCP3XX series pumps.The motor: is now PWM compatible, allowing variable speed control thru the motherboard from 1300 to 4500 rpm
http://martinsliquidlab.org/2011/02/25/swiftech-mcp-35x-reservoir/
http://skinneelabs.com/swiftech-mcp35x/