tool help

[FGFO1@aol.com]

to date no one has complimented me on my welding. i wonder why.
as i tend to put a little too much on i find i then have to grind it off. i 
know the solution is not to put so much on but all efforts in that field have 
failed. 
i have been using a little air driven pistol grip grinder 4 1/2" and it is a 
little slow.
am i better off going for a larger air grinder or a small electric angle 
grinder again about 4 1/2" ?
thanks
Frank Fisher
TS41366L..58 TR3A
Temecula 
California