I have tried almost all trading programs, at least the ones have demo versions.
The most promising are
Wealthlab Pro -- good for EOD
Tradestation - Easy, powerful but some acute limitations
Amibroker - Fast, difficult
Multicharts - Slick, promising
Ninjatrader -- promising but buggy last I checked
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First if you go for intraday trading then most programs are too slow. There are only a few programs on the market that are fast enough to test intraday systems and that narrows it down to Tradestation, Multicharts, and Amibroker. Integrated data is big plus for TradeStation too. Tradestation has a huge support community which is important.
The biggest limitation for TradeStation for me are that it is hard to do portfolio, pairs, hedging without add-on. They bought Rina (and Grail) but no add on yet. Also, another big limitation is that TradeStation doesn't offer historical volume at price data. Currently going to look into Seer.
Please suggest any platforms capable of making more like HFT strategies, drag/drop, cheap.
If/when tradestation takes advantage of add-on properties then I can't see anyone beating them... hope they get this done soon