@Buckaroo this is the 5th battery I have used and find it to be the best so far:
YTX20HL-BS AGM Maintenance Free Battery
I have used it for 2 winters now and have never had an issue to date. It starts my bike down to 22F so far without need of a trickle charger. As a matter of fact, I have not used a charger for over a year now.
Battery Mart has given me good service too with quick shipping.
Good luck