Plasma TVs are available both in lower as well as in higher ranges. But if you say Cheap and Best, both cannot go together. It has to be either of the criteria. So, I have divided them under two categories of your query.
1. Rage 24R1HD It is of 59 cm (24 inches). It is a HD Ready LED TV, Black in color. Right now with a 33% discount, you get it in Rs. 9,990, and the original price is Rs.14,999. The Screen Size is 24 Inches, Display Type is Plasma with a Resolution of 720pixels. You get 2 USB ports with it.
2. Panasonic Viera 50 It is a Full HD Plasma TH-P50V20 TV. Right now been available at the best Price of Rs. 13,119. The Screen Size is 50 Inches with 4 HDMIs.
3. Panasonic 50 Another Full HD 3D Plasma TH-P50VT20 TV from the Panasonic. You get it now for a Price of Rs. 20,736. Has a Screen Size of 50 Inches with 4 HDMI ports.
1. Samsung 64 inches Full HD Plasma TV - F8500 (Black) Right now selling off at a price range of 1.88L to 2.24L. The Screen Size is 64 Inches with a PDP Display and a Resolution of 1920 x 1080 pixels. Comes with 4 HDMI ports.
2. LG 50PB560B 127 cm (50) Plasma TV (HD Ready) The price varies from 52,370 to 57,900. The Screen Size is 50 Inches. Display Type is Plasma with a HD Ready Resolution. The Aspect Ratio has 7 modes (16:9, Just scan, Original, 4:3, 14:9, Zoom, Cinema Zoom)
3. LG 50PB6600 127 cm (50) Plasma TV (Full HD, Smart) Right now the Best Price in the market is Rs. 64,900. The Screen Size is 50 Inches, the Display Type is Plasma with a Full HD Resolution. The Aspect Ratio has 8 Modes (16:9, Just Scan, Original, Full Wide, 4:3, 14:9, Cinema Zoom 1, Zoom)
To get the best of both worlds, Panasonic 50 can be a solution for the time being till you opt for an upgrade.