It looks like the Shark line has the domed glass faces - which wouldn't be my choice, but would be fine for some. They also don't mfr the 3-1/8 dia speedo and tach which I prefer, only the 3-3/8. They were too new on the market when I was accumulating parts for my car and were an unknown, so am using VDO's. But Dolphin have hung in there, so my guess is that they are a reasonably sound product, and if in your budget, a possible choice.

Take a look here for other brands to look at - eGauges.com - VDO, Auto Meter, Defi, Isspro, Cyberdyne and Classic Instruments Gauges