I'm wanting to get a volt meter and maybe combination amp probe. I'd like something with a big display (rather have a big glowing red display than LCD, if possible) and with simple controls as I am not very smart. Also (on my wish list) would be one that uses simple batteries: say a 9 volt instead of micro-sized 24 volt battery that costs $40. Are there any models I should look for --and to avoid. What price range could I expect? Thanks!