Generally speaking, all internet providers in the Netherlands have good connections and good services. They all have similar priced packages and reasonable customer service. Have a look at the providers below, and make your choice.
You will find providers below but you can also compare providers on this website (only in Dutch).
HCC Net http://www.hccnet.nl
Het Net http://www.hetnet.nl
Interconnect http://www.interconnect.nl
Interned Services http://www.is.nl
InterNLnet http://www.internl.net
Introweb http://www.introweb.nl
Keyaccess http://www.keyaccess.nl
KPN http://www.kpn.com/prive/internet.htm
Luna http://www.luna.nl
PublishNet http://www.publishnet.nl
Q web http://www.qweb.nl
Solcon http://www.solcon.net
Telfort http://www.telfort.nl/
XS4ALL http://www.xs4all.nl
Zeelandnet http://www.zeelandnet.nl
Freeaccess http://www.freeaccess.nl
TMFweb http://www.tmfweb.nl
SiteBytes http://www.sitebytes.nl
BBNed http://www.bbned.nl
Canal Digitaal http://www.canaldigitaal.nl/
DataWeb http://www.dataweb.nl
HCC Net http://www.hccnet.nl
Interned Services http://www.is.nl
Mxstream (KPN) http://www.mxstream.nl
T-Mobile http://www.t-mobile.nl/home
Tele2 http://www.tele2.nl/
Telfort http://www.telfort.nl/
Vodafone http://www.vodafone.nl/
XS4ALL http://www.xs4all.nl
T-Mobile http://www.t-mobile.nl/home
UPC http://www.upc.nl/
Zeelandnet http://www.zeelandnet.nl
Ziggo https://www.ziggo.nl/
Vodafone http://www.vodafone.nl/
Concepts http://www.concepts.nl/