I'm with AmiSMB, get the absolute best charger you can afford, and you won't need another for many years. The 5A charger should be trickling away and dying with the large number of LiPo cells now 5C charge rated.
For instance try:
-The Fusion RC range, in particular the
Paladin L120 Pro and the
Emperor.
-The Hyperion range, as already mentioned. Look at the
720i, and the
0615.