What type of connectors are best to use when doing the electrics. I have often used the red/blue crimp ones but they never look that good and I'm never confident in their longevity. Are there better crimps/tools to use?
The crimps you mention are OK especially if it's for things you may wish to disconnect at a later date but make sure you use good quality crimps, and a good quality crimping tool is not to be sniffed at either.
It's worth paying the extra for the proper tools as well.
MP71 for non insulated crimps - these are much cheaper then the insulated crimps so you soon cover the cost of the tool. They match the originals as well if you use the rubber boots on them.
The crimps you mention are OK especially if it's for things you may wish to disconnect at a later date but make sure you use good quality crimps, and a good quality crimping tool is not to be sniffed at either.
For a two pole connector Maplin do the Tamiya connector which is generally the connector used on battery optomisers, and heated grips. Neat and fairly small, and available of the shelf. Also available cheaper on ebay.