Hey guys, I am looking to invest in a Tube Tester, and before I lay down some coinage, I was hoping to ask around here, hoping you veteran repairmen could help me out a little bit. What is an entry level tester, that will be usefull on MOST older crts, and some new ones as well? I can only spend at a max, maybe $150-$200 TOPS!!!! Any input here would be highly appreciated.