The Ikon is a boiler machine (better for steaming) the Pro is a thermo block. the espresso from them is probably pretty similar,
the main difference being in how the water is heated. You have the pro now so best to not think too hard about it. if the coffee is coming out watery and with little flavor then you may have one of two issues or both. You need a finer grind (most likely) and also are your beans fresh roasted? (no more the a few weeks old.) Also how long had your machine been on? 5 min? it will probably need a good half hour to an hour for everything to get hot, if its not then you wont be getting all the flavor from the coffee.
On the subject of pressurized baskets they will always give a soggy puck so dont worry untill you get them unpressurized. Also I dont know if the Pro has a 3 way valve so even with unpressurized baskets you may still get soggy pucks. Its not necessarily an indication of whats in the cup, so dont worry too much.
Cheers I hope that helped.