I agree that a bigger dish would help. However re the meter question, I have both one of those
SF95 meters, and also a Channel Master 10071FD, which can be found for something close to the $100 budget you mention. With either meter though, it sometimes is hard to find weaker satellites, ie sometimes they will lead you to a stronger nearby sat. However often this is all you need, ie if it leads you to the nearby sat, then you know just to move the dish a bit east or west.
Re these two meters, obviously the SF-95 is much cheaper, and is nice because no battery is required, but the Channel Master has some nice features. It is a bit more sensitive, it has the capability of measuring the lnb voltage coming from the receiver, and can generate 13/18V to power the lnbs when in battery mode, and can detect and generate 22khz signals. I really like the Channel Master, although I'd really prefer a meter which was even a bit more sensitive, and would really like a meter which had a low pass filter that would cut out signal from the DBS satellites when using a linear lnbf. (Ie it would still work fine for finding DBS sats when using a circular lnbf). However I haven't seen such a meter for sale.