I had my complaints about Alphatrade but I guess I was living in a fantasy world (for several years w/APTD's platform--it was just ...there...) and I hadn't had much experience beyond the old Quotetracker and a couple of other proprietary brokerage ones.
Complete POS imho as well. News feed delayed. Bid/Ask in L2 rarely similar to watch list B/A. Connectivity problems galore. No sound alerts on PR's or filings.
Alpha-trade please for the love of god come back :-)