We had a Amana electric range, worked fine for 11 years and was still working fine when we replaced it with our new Electrolux range.

The Amana was not a fancy range, but it did what a range is supposed to do and that was it cooked food without a bunch of bells and whistles.

I've been very pleased with two Amana gas ranges I've owned (two different houses). We have the AGR5735, which should be available for that kind of money or perhaps even less. Or there's the AGR5835 if you want to spring another $100 or so for convection. Reliability for has been very good, no service calls over four years with the two ranges, although I did have to replace the igniter in one ($40, did it myself).

Consumer Reports is highly contested here, but I think a worthwhile visit considering your price range. For all gas - Hotpoint tops their reliability ratings, and their $500 RGB745WEH placed second overall while being the cheapest of all all-gas models rated. Shortcomings being "good" cooktop high and oven cleaning.

Kenmore gas ranges have more bells and whistles - like two PowerPlus burners instead of one on comparable name-brand models. They are mostly sourced from Electrolux and Whirlpool. I've had two of them and been very happy with both, although these days I would buy the extended warranty because the circuit board repairs on all these stoves, regardless of brand name, is quite expensive (I've had to replace them several times, so I know!).

Wait for a Sears sale and sometimes the 10% coupons that appear, and you can get a very decent range for several hundred $$ off.